diff --git a/app/Models/Orders/Order.php b/app/Models/Orders/Order.php
new file mode 100644
index 0000000..b819eb0
--- /dev/null
+++ b/app/Models/Orders/Order.php
@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Models\Orders;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class Order extends Model
+{
+    use SoftDeletes;
+
+    // 주문(견적/수주/발주 메인)
+    protected $table = 'orders';
+
+    protected $fillable = [
+        'tenant_id', 'order_no', 'order_type_code', 'status_code', 'category_code', 'product_id',
+        'received_at', 'writer_id', 'client_id', 'client_contact', 'site_name', 'quantity', 'delivery_date',
+        'delivery_method_code', 'memo'
+    ];
+
+    // 상세(라인)
+    public function items()
+    {
+        return $this->hasMany(OrderItem::class);
+    }
+
+    // 이력
+    public function histories()
+    {
+        return $this->hasMany(OrderHistory::class);
+    }
+
+    // 버전관리
+    public function versions()
+    {
+        return $this->hasMany(OrderVersion::class);
+    }
+}
diff --git a/app/Models/Orders/OrderHistory.php b/app/Models/Orders/OrderHistory.php
new file mode 100644
index 0000000..016f3c8
--- /dev/null
+++ b/app/Models/Orders/OrderHistory.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Models\Orders;
+
+use Illuminate\Database\Eloquent\Model;
+
+class OrderHistory extends Model
+{
+    // 이력/메모
+    protected $table = 'order_histories';
+
+    protected $fillable = [
+        'tenant_id', 'order_id', 'history_type', 'content', 'created_by'
+    ];
+
+    public function order()
+    {
+        return $this->belongsTo(Order::class);
+    }
+}
diff --git a/app/Models/Orders/OrderItem.php b/app/Models/Orders/OrderItem.php
new file mode 100644
index 0000000..f8dc674
--- /dev/null
+++ b/app/Models/Orders/OrderItem.php
@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Models\Orders;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class OrderItem extends Model
+{
+    use SoftDeletes;
+
+    // 주문 상세
+    protected $table = 'order_items';
+
+    protected $fillable = [
+        'tenant_id', 'order_id', 'serial_no', 'product_id', 'quantity',
+        'status_code', 'design_code', 'remarks', 'attributes'
+    ];
+
+    // 투입 구성(자재/BOM 등)
+    public function components()
+    {
+        return $this->hasMany(OrderItemComponent::class);
+    }
+
+    public function order()
+    {
+        return $this->belongsTo(Order::class);
+    }
+}
diff --git a/app/Models/Orders/OrderItemComponent.php b/app/Models/Orders/OrderItemComponent.php
new file mode 100644
index 0000000..aed60d2
--- /dev/null
+++ b/app/Models/Orders/OrderItemComponent.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Models\Orders;
+
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\SoftDeletes;
+
+class OrderItemComponent extends Model
+{
+    use SoftDeletes;
+
+    // 투입구성(자재, 제품, 부품, BOM)
+    protected $table = 'order_item_components';
+
+    protected $fillable = [
+        'tenant_id', 'order_item_id', 'component_type', 'component_id', 'quantity',
+        'unit', 'price', 'remarks', 'created_by', 'updated_by'
+    ];
+
+    public function orderItem()
+    {
+        return $this->belongsTo(OrderItem::class);
+    }
+}
diff --git a/app/Models/Orders/OrderVersion.php b/app/Models/Orders/OrderVersion.php
new file mode 100644
index 0000000..128c98c
--- /dev/null
+++ b/app/Models/Orders/OrderVersion.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace App\Models\Orders;
+
+use Illuminate\Database\Eloquent\Model;
+
+class OrderVersion extends Model
+{
+    // 주문 버전관리(변경사항만 저장)
+    protected $table = 'order_versions';
+
+    protected $fillable = [
+        'tenant_id', 'order_id', 'version_no', 'version_type', 'status_code', 'changed_fields', 'created_by', 'change_note'
+    ];
+
+    public function order()
+    {
+        return $this->belongsTo(Order::class);
+    }
+}