diff --git a/app/Http/Controllers/V1/ProcessController.php b/app/Http/Controllers/V1/ProcessController.php
index dec46878..039ab1c7 100644
--- a/app/Http/Controllers/V1/ProcessController.php
+++ b/app/Http/Controllers/V1/ProcessController.php
@@ -95,6 +95,17 @@ public function toggleActive(int $id): JsonResponse
         );
     }
 
+    /**
+     * 공정 복제
+     */
+    public function duplicate(int $id): JsonResponse
+    {
+        return ApiResponse::handle(
+            fn () => $this->processService->duplicate($id),
+            'message.created'
+        );
+    }
+
     /**
      * 공정 옵션 목록 (드롭다운용)
      */
diff --git a/app/Services/ProcessService.php b/app/Services/ProcessService.php
index 7eb64995..8865cbe5 100644
--- a/app/Services/ProcessService.php
+++ b/app/Services/ProcessService.php
@@ -267,6 +267,92 @@ private function syncProcessItems(Process $process, array $itemIds): void
         }
     }
 
+    /**
+     * 공정 복제
+     */
+    public function duplicate(int $id)
+    {
+        $tenantId = $this->tenantId();
+        $userId = $this->apiUserId();
+
+        $source = Process::where('tenant_id', $tenantId)
+            ->with(['classificationRules', 'processItems', 'steps'])
+            ->find($id);
+
+        if (! $source) {
+            throw new NotFoundHttpException(__('error.not_found'));
+        }
+
+        return DB::transaction(function () use ($source, $tenantId, $userId) {
+            $newCode = $this->generateProcessCode($tenantId);
+
+            $newProcess = Process::create([
+                'tenant_id' => $tenantId,
+                'process_code' => $newCode,
+                'process_name' => $source->process_name.' (복사)',
+                'description' => $source->description,
+                'process_type' => $source->process_type,
+                'department' => $source->department,
+                'manager' => $source->manager,
+                'process_category' => $source->process_category,
+                'use_production_date' => $source->use_production_date,
+                'work_log_template' => $source->work_log_template,
+                'document_template_id' => $source->document_template_id,
+                'work_log_template_id' => $source->work_log_template_id,
+                'options' => $source->options,
+                'required_workers' => $source->required_workers,
+                'equipment_info' => $source->equipment_info,
+                'work_steps' => $source->work_steps,
+                'note' => $source->note,
+                'is_active' => $source->is_active,
+                'created_by' => $userId,
+            ]);
+
+            // 분류 규칙 복제
+            foreach ($source->classificationRules as $rule) {
+                ProcessClassificationRule::create([
+                    'process_id' => $newProcess->id,
+                    'registration_type' => $rule->registration_type,
+                    'rule_type' => $rule->rule_type,
+                    'matching_type' => $rule->matching_type,
+                    'condition_value' => $rule->condition_value,
+                    'priority' => $rule->priority,
+                    'description' => $rule->description,
+                    'is_active' => $rule->is_active,
+                ]);
+            }
+
+            // 품목 연결 복제
+            foreach ($source->processItems as $item) {
+                ProcessItem::create([
+                    'process_id' => $newProcess->id,
+                    'item_id' => $item->item_id,
+                    'priority' => $item->priority,
+                    'is_active' => $item->is_active,
+                ]);
+            }
+
+            // 공정 단계 복제
+            foreach ($source->steps as $step) {
+                $newProcess->steps()->create([
+                    'step_code' => $step->step_code,
+                    'step_name' => $step->step_name,
+                    'is_required' => $step->is_required,
+                    'needs_approval' => $step->needs_approval,
+                    'needs_inspection' => $step->needs_inspection,
+                    'is_active' => $step->is_active,
+                    'sort_order' => $step->sort_order,
+                    'connection_type' => $step->connection_type,
+                    'connection_target' => $step->connection_target,
+                    'completion_type' => $step->completion_type,
+                    'options' => $step->options,
+                ]);
+            }
+
+            return $newProcess->load(['classificationRules', 'processItems.item:id,code,name', 'steps', 'documentTemplate:id,name,category', 'workLogTemplateRelation:id,name,category']);
+        });
+    }
+
     /**
      * 드롭다운용 공정 옵션 목록
      */
diff --git a/routes/api/v1/production.php b/routes/api/v1/production.php
index 18c33f16..cba64d32 100644
--- a/routes/api/v1/production.php
+++ b/routes/api/v1/production.php
@@ -31,6 +31,7 @@
     Route::put('/{id}', [ProcessController::class, 'update'])->whereNumber('id')->name('v1.processes.update');
     Route::delete('/{id}', [ProcessController::class, 'destroy'])->whereNumber('id')->name('v1.processes.destroy');
     Route::patch('/{id}/toggle', [ProcessController::class, 'toggleActive'])->whereNumber('id')->name('v1.processes.toggle');
+    Route::post('/{id}/duplicate', [ProcessController::class, 'duplicate'])->whereNumber('id')->name('v1.processes.duplicate');
 
     // Process Steps (공정 단계)
     Route::prefix('{processId}/steps')->whereNumber('processId')->group(function () {