diff --git a/app/Database/Migrations/2026-02-08-110006_CreateTaskChecklistsTable.php b/app/Database/Migrations/2026-02-08-110006_CreateTaskChecklistsTable.php
new file mode 100644
index 0000000..ecaafc8
--- /dev/null
+++ b/app/Database/Migrations/2026-02-08-110006_CreateTaskChecklistsTable.php
@@ -0,0 +1,59 @@
+<?php
+
+namespace App\Database\Migrations;
+
+use CodeIgniter\Database\Migration;
+
+class CreateTaskChecklistsTable extends Migration
+{
+    public function up()
+    {
+        $this->forge->addField([
+            'id' => [
+                'type'           => 'INT',
+                'constraint'     => 11,
+                'unsigned'       => true,
+                'auto_increment' => true,
+            ],
+            'task_id' => [
+                'type'       => 'INT',
+                'constraint' => 11,
+                'unsigned'   => true,
+                'null'       => false,
+            ],
+            'title' => [
+                'type'       => 'VARCHAR',
+                'constraint' => 255,
+                'null'       => false,
+            ],
+            'is_completed' => [
+                'type'       => 'BOOLEAN',
+                'default'    => false,
+            ],
+            'order_index' => [
+                'type'       => 'INT',
+                'constraint' => 11,
+                'default'    => 0,
+            ],
+            'created_at' => [
+                'type' => 'DATETIME',
+                'null' => true,
+            ],
+            'updated_at' => [
+                'type' => 'DATETIME',
+                'null' => true,
+            ],
+        ]);
+        
+        $this->forge->addKey('id', true);
+        $this->forge->addKey('task_id');
+        $this->forge->addForeignKey('task_id', 'tasks', 'id', '', 'CASCADE');
+        
+        $this->forge->createTable('task_checklists');
+    }
+
+    public function down()
+    {
+        $this->forge->dropTable('task_checklists');
+    }
+}
\ No newline at end of file
diff --git a/app/Modules/Tasks/Config/Routes.php b/app/Modules/Tasks/Config/Routes.php
index 55d31c4..6a66c16 100644
--- a/app/Modules/Tasks/Config/Routes.php
+++ b/app/Modules/Tasks/Config/Routes.php
@@ -32,6 +32,11 @@ $routes->group('tasks', ['filter' => ['org', 'subscription:tasks'], 'namespace'
     $routes->post('(:num)/subtasks', 'TasksController::addSubtask/$1');
     $routes->post('(:num)/subtasks/(:num)/toggle', 'TasksController::toggleSubtask/$1/$2');
     $routes->post('(:num)/subtasks/(:num)/delete', 'TasksController::deleteSubtask/$1/$2');
+
+    // Checklists API
+    $routes->post('(:num)/checklists', 'TasksController::addChecklistItem/$1');
+    $routes->post('(:num)/checklists/(:num)/toggle', 'TasksController::toggleChecklistItem/$1/$2');
+    $routes->post('(:num)/checklists/(:num)/delete', 'TasksController::deleteChecklistItem/$1/$2');
 });
 
 // API Routes для Tasks
diff --git a/app/Modules/Tasks/Controllers/TasksController.php b/app/Modules/Tasks/Controllers/TasksController.php
index 39af6bc..af68289 100644
--- a/app/Modules/Tasks/Controllers/TasksController.php
+++ b/app/Modules/Tasks/Controllers/TasksController.php
@@ -614,4 +614,108 @@ class TasksController extends BaseController
             'success' => $result,
         ]);
     }
+
+    // ========== Чек-листы (Checklists) ==========
+
+    /**
+     * API: добавить элемент чек-листа
+     */
+    public function addChecklistItem(int $taskId)
+    {
+        if (!$this->access->canEdit('tasks')) {
+            return $this->response->setJSON([
+                'success' => false,
+                'error' => 'Нет прав для изменения задач'
+            ]);
+        }
+
+        $organizationId = $this->requireActiveOrg();
+        $userId = $this->getCurrentUserId();
+
+        $title = trim($this->request->getPost('title'));
+        if (empty($title)) {
+            return $this->response->setJSON([
+                'success' => false,
+                'error' => 'Название элемента чек-листа обязательно'
+            ]);
+        }
+
+        // Проверяем что задача принадлежит организации
+        $task = $this->taskService->getTask($taskId, $organizationId);
+        if (!$task) {
+            return $this->response->setJSON([
+                'success' => false,
+                'error' => 'Задача не найдена'
+            ]);
+        }
+
+        $checklistId = $this->taskService->addChecklistItem($taskId, $title, $userId);
+
+        return $this->response->setJSON([
+            'success' => (bool) $checklistId,
+            'checklist_id' => $checklistId,
+        ]);
+    }
+
+    /**
+     * API: переключить статус элемента чек-листа
+     */
+    public function toggleChecklistItem(int $taskId, int $checklistId)
+    {
+        if (!$this->access->canEdit('tasks')) {
+            return $this->response->setJSON([
+                'success' => false,
+                'error' => 'Нет прав для изменения задач'
+            ]);
+        }
+
+        $organizationId = $this->requireActiveOrg();
+        $userId = $this->getCurrentUserId();
+
+        // Проверяем что задача принадлежит организации
+        $task = $this->taskService->getTask($taskId, $organizationId);
+        if (!$task) {
+            return $this->response->setJSON([
+                'success' => false,
+                'error' => 'Задача не найдена'
+            ]);
+        }
+
+        $result = $this->taskService->toggleChecklistItem($taskId, $checklistId, $userId);
+
+        return $this->response->setJSON([
+            'success' => $result,
+        ]);
+    }
+
+    /**
+     * API: удалить элемент чек-листа
+     */
+    public function deleteChecklistItem(int $taskId, int $checklistId)
+    {
+        if (!$this->access->canEdit('tasks')) {
+            return $this->response->setJSON([
+                'success' => false,
+                'error' => 'Нет прав для изменения задач'
+            ]);
+        }
+
+        $organizationId = $this->requireActiveOrg();
+        $userId = $this->getCurrentUserId();
+
+        // Проверяем что задача принадлежит организации
+        $task = $this->taskService->getTask($taskId, $organizationId);
+        if (!$task) {
+            return $this->response->setJSON([
+                'success' => false,
+                'error' => 'Задача не найдена'
+            ]);
+        }
+
+        $result = $this->taskService->deleteChecklistItem($taskId, $checklistId, $userId);
+
+        return $this->response->setJSON([
+            'success' => $result,
+        ]);
+    }
 }
diff --git a/app/Modules/Tasks/Models/TaskChecklistModel.php b/app/Modules/Tasks/Models/TaskChecklistModel.php
new file mode 100644
index 0000000..c1b3f4c
--- /dev/null
+++ b/app/Modules/Tasks/Models/TaskChecklistModel.php
@@ -0,0 +1,74 @@
+<?php
+
+namespace App\Modules\Tasks\Models;
+
+use CodeIgniter\Model;
+use App\Models\Traits\TenantScopedModel;
+
+class TaskChecklistModel extends Model
+{
+    use TenantScopedModel;
+
+    protected $table            = 'task_checklists';
+    protected $primaryKey       = 'id';
+    protected $useAutoIncrement = true;
+    protected $returnType       = 'array';
+    protected $useSoftDeletes   = false;
+    protected $tenantField      = 'task.organization_id';
+    protected $allowedFields    = [
+        'task_id',
+        'title',
+        'is_completed',
+        'order_index',
+    ];
+    protected $useTimestamps = true;
+    protected $createdField  = 'created_at';
+    protected $updatedField  = 'updated_at';
+
+    /**
+     * Получить элементы чек-листа задачи
+     */
+    public function getByTask(int $taskId): array
+    {
+        return $this->where('task_id', $taskId)
+            ->orderBy('order_index', 'ASC')
+            ->findAll();
+    }
+
+    /**
+     * Получить следующий порядковый номер для элемента чек-листа
+     */
+    public function getNextOrder(int $taskId): int
+    {
+        $max = $this->selectMax('order_index')
+            ->where('task_id', $taskId)
+            ->first();
+
+        return ($max['order_index'] ?? 0) + 1;
+    }
+
+    /**
+     * Переключить статус элемента чек-листа
+     */
+    public function toggle(int $checklistId): bool
+    {
+        $checklist = $this->find($checklistId);
+        if (!$checklist) {
+            return false;
+        }
+
+        return $this->update($checklistId, [
+            'is_completed' => !$checklist['is_completed'],
+        ]);
+    }
+
+    /**
+     * Получить количество незавершённых элементов чек-листа
+     */
+    public function getIncompleteCount(int $taskId): int
+    {
+        return $this->where('task_id', $taskId)
+            ->where('is_completed', false)
+            ->countAllResults();
+    }
+}
\ No newline at end of file
diff --git a/app/Modules/Tasks/Services/TaskService.php b/app/Modules/Tasks/Services/TaskService.php
index 6699429..b5f5c2b 100644
--- a/app/Modules/Tasks/Services/TaskService.php
+++ b/app/Modules/Tasks/Services/TaskService.php
@@ -6,6 +6,7 @@ use App\Modules\Tasks\Models\TaskModel;
 use App\Modules\Tasks\Models\TaskAssigneeModel;
 use App\Modules\Tasks\Models\TaskColumnModel;
 use App\Modules\Tasks\Models\TaskSubtaskModel;
+use App\Modules\Tasks\Models\TaskChecklistModel;
 use CodeIgniter\Events\Events;
 
 class TaskService
@@ -14,6 +15,7 @@ class TaskService
     protected TaskAssigneeModel $assigneeModel;
     protected TaskColumnModel $columnModel;
     protected TaskSubtaskModel $subtaskModel;
+    protected TaskChecklistModel $checklistModel;
 
     public function __construct()
     {
@@ -21,6 +23,7 @@ class TaskService
         $this->assigneeModel = new TaskAssigneeModel();
         $this->columnModel = new TaskColumnModel();
         $this->subtaskModel = new TaskSubtaskModel();
+        $this->checklistModel = new TaskChecklistModel();
     }
 
     /**
@@ -180,6 +183,9 @@ class TaskService
         $task['subtasks'] = $this->subtaskModel->getByTask($taskId);
         $task['subtasks_count'] = count($task['subtasks']);
         $task['subtasks_completed'] = count(array_filter($task['subtasks'], fn($s) => $s['is_completed']));
+        $task['checklists'] = $this->checklistModel->getByTask($taskId);
+        $task['checklists_count'] = count($task['checklists']);
+        $task['checklists_completed'] = count(array_filter($task['checklists'], fn($c) => $c['is_completed']));
 
         return $task;
     }
@@ -349,4 +355,83 @@ class TaskService
 
         return $result;
     }
+
+    // ========== Чек-листы (Checklists) ==========
+
+    /**
+     * Добавить элемент чек-листа
+     */
+    public function addChecklistItem(int $taskId, string $title, int $userId): int
+    {
+        $orderIndex = $this->checklistModel->getNextOrder($taskId);
+
+        $checklistId = $this->checklistModel->insert([
+            'task_id' => $taskId,
+            'title' => trim($title),
+            'order_index' => $orderIndex,
+        ]);
+
+        if ($checklistId) {
+            Events::trigger('task.checklist_item_created', $taskId, $checklistId, $userId);
+        }
+
+        return $checklistId;
+    }
+
+    /**
+     * Переключить статус элемента чек-листа
+     */
+    public function toggleChecklistItem(int $taskId, int $checklistId, int $userId): bool
+    {
+        $checklist = $this->checklistModel->find($checklistId);
+        if (!$checklist || $checklist['task_id'] != $taskId) {
+            return false;
+        }
+
+        $result = $this->checklistModel->toggle($checklistId);
+
+        if ($result) {
+            Events::trigger('task.checklist_item_toggled', $taskId, $checklistId, !$checklist['is_completed'], $userId);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Удалить элемент чек-листа
+     */
+    public function deleteChecklistItem(int $taskId, int $checklistId, int $userId): bool
+    {
+        $checklist = $this->checklistModel->find($checklistId);
+        if (!$checklist || $checklist['task_id'] != $taskId) {
+            return false;
+        }
+
+        $result = $this->checklistModel->delete($checklistId);
+
+        if ($result) {
+            Events::trigger('task.checklist_item_deleted', $taskId, $checklistId, $userId);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Обновить элемент чек-листа
+     */
+    public function updateChecklistItem(int $taskId, int $checklistId, array $data, int $userId): bool
+    {
+        $checklist = $this->checklistModel->find($checklistId);
+        if (!$checklist || $checklist['task_id'] != $taskId) {
+            return false;
+        }
+
+        $result = $this->checklistModel->update($checklistId, $data);
+
+        if ($result) {
+            Events::trigger('task.checklist_item_updated', $taskId, $checklistId, $data, $userId);
+        }
+
+        return $result;
+    }
 }
diff --git a/app/Modules/Tasks/Views/tasks/show.twig b/app/Modules/Tasks/Views/tasks/show.twig
index d2a16aa..ca9fa08 100644
--- a/app/Modules/Tasks/Views/tasks/show.twig
+++ b/app/Modules/Tasks/Views/tasks/show.twig
@@ -140,6 +140,51 @@
             </div>
         </div>
 
+        {# Чек-лист #}
+        <div class="card border-0 shadow-sm mb-4">
+            <div class="card-header bg-light d-flex justify-content-between align-items-center">
+                <h5 class="mb-0">
+                    <i class="fa-solid fa-check-square me-2"></i>Чек-лист
+                    {% if task.checklists_count %}
+                        <span class="badge bg-secondary ms-2">{{ task.checklists_completed }}/{{ task.checklists_count }}</span>
+                    {% endif %}
+                </h5>
+            </div>
+            <div class="card-body">
+                {% if task.checklists %}
+                    <ul class="list-group list-group-flush mb-3" id="checklists-list">
+                        {% for checklist in task.checklists %}
+                            <li class="list-group-item d-flex align-items-center gap-2" data-checklist-id="{{ checklist.id }}">
+                                <input type="checkbox" class="form-check-input checklist-checkbox"
+                                       {% if checklist.is_completed %}checked{% endif %}
+                                       onchange="toggleChecklistItem({{ task.id }}, {{ checklist.id }})">
+                                <span class="{% if checklist.is_completed %}text-muted text-decoration-line-through{% endif %} flex-grow-1">
+                                    {{ checklist.title }}
+                                </span>
+                                <button type="button" class="btn btn-outline-danger btn-sm"
+                                        onclick="deleteChecklistItem({{ task.id }}, {{ checklist.id }})"
+                                        title="Удалить">
+                                    <i class="fa-solid fa-times"></i>
+                                </button>
+                            </li>
+                        {% endfor %}
+                    </ul>
+                {% else %}
+                    <p class="text-muted text-center mb-3">Чек-лист пуст</p>
+                {% endif %}
+
+                <form action="{{ base_url('/tasks/' ~ task.id ~ '/checklists') }}" method="post"
+                      class="d-flex gap-2 checklist-form" onsubmit="addChecklistItem(event, {{ task.id }})">
+                    {{ csrf_field()|raw }}
+                    <input type="text" name="title" class="form-control"
+                           placeholder="Добавить пункт чек-листа..." required>
+                    <button type="submit" class="btn btn-primary">
+                        <i class="fa-solid fa-plus"></i>
+                    </button>
+                </form>
+            </div>
+        </div>
+
         {# Комментарии #}
         <div class="card border-0 shadow-sm">
             <div class="card-header bg-light">
@@ -314,5 +359,83 @@ function deleteSubtask(taskId, subtaskId) {
         console.error('Error:', error);
     });
 }
+
+// ========== Чек-листы ==========
+
+function addChecklistItem(event, taskId) {
+    event.preventDefault();
+    const form = event.target;
+    const input = form.querySelector('input[name="title"]');
+    const title = input.value.trim();
+
+    if (!title) return;
+
+    fetch(`/tasks/${taskId}/checklists`, {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/x-www-form-urlencoded',
+            'X-Requested-With': 'XMLHttpRequest'
+        },
+        body: 'title=' + encodeURIComponent(title)
+    })
+    .then(response => response.json())
+    .then(data => {
+        if (data.success) {
+            location.reload();
+        } else {
+            alert(data.error || 'Ошибка при добавлении пункта чек-листа');
+        }
+    })
+    .catch(error => {
+        console.error('Error:', error);
+        alert('Ошибка при добавлении пункта чек-листа');
+    });
+}
+
+function toggleChecklistItem(taskId, checklistId) {
+    fetch(`/tasks/${taskId}/checklists/${checklistId}/toggle`, {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/x-www-form-urlencoded',
+            'X-Requested-With': 'XMLHttpRequest'
+        },
+        body: ''
+    })
+    .then(response => response.json())
+    .then(data => {
+        if (!data.success) {
+            alert(data.error || 'Ошибка');
+        } else {
+            location.reload();
+        }
+    })
+    .catch(error => {
+        console.error('Error:', error);
+    });
+}
+
+function deleteChecklistItem(taskId, checklistId) {
+    if (!confirm('Удалить пункт чек-листа?')) return;
+
+    fetch(`/tasks/${taskId}/checklists/${checklistId}/delete`, {
+        method: 'POST',
+        headers: {
+            'Content-Type': 'application/x-www-form-urlencoded',
+            'X-Requested-With': 'XMLHttpRequest'
+        },
+        body: ''
+    })
+    .then(response => response.json())
+    .then(data => {
+        if (!data.success) {
+            alert(data.error || 'Ошибка');
+        } else {
+            location.reload();
+        }
+    })
+    .catch(error => {
+        console.error('Error:', error);
+    });
+}
 </script>
 {% endblock %}