diff --git a/lib/inventree/purchase_order.dart b/lib/inventree/purchase_order.dart
new file mode 100644
index 00000000..54a2cb9c
--- /dev/null
+++ b/lib/inventree/purchase_order.dart
@@ -0,0 +1,116 @@
+import 'model.dart';
+
+// TODO: In the future, status codes should be retrieved from the server
+const int PO_STATUS_PENDING = 10;
+const int PO_STATUS_PLACED = 20;
+const int PO_STATUS_COMPLETE = 30;
+const int PO_STATUS_CANCELLED = 40;
+const int PO_STATUS_LOST = 50;
+const int PO_STATUS_RETURNED = 60;
+
+class InvenTreePO extends InvenTreeModel {
+
+  @override
+  String get URL => "order/po/";
+
+  @override
+  Map<String, dynamic> formFields() {
+    return {
+      "reference": {},
+      "supplier": {},
+      "supplier_reference": {},
+      "description": {},
+      "target_date": {},
+      "link": {},
+      "responsible": {},
+    };
+  }
+
+  InvenTreePO() : super();
+
+  String get issueDate => jsondata['issue_date'] ?? "";
+
+  String get completeDate => jsondata['complete_date'] ?? "";
+
+  String get creationDate => jsondata['creation_date'] ?? "";
+
+  String get targetDate => jsondata['target_date'] ?? "";
+
+  int get lineItems => jsondata['line_items'] ?? 0;
+
+  bool get overdue => jsondata['overdue'] ?? false;
+
+  String get reference => jsondata['reference'] ?? "";
+
+  int get responsible => jsondata['responsible'] ?? -1;
+
+  int get supplier => jsondata['supplier'] ?? -1;
+
+  String get supplierReference => jsondata['supplier_reference'] ?? "";
+
+  int get status => jsondata['status'] ?? -1;
+
+  String get statusText => jsondata['status_text'] ?? "";
+
+  bool get isOpen => this.status == PO_STATUS_PENDING || this.status == PO_STATUS_PLACED;
+
+  bool get isFailed => this.status == PO_STATUS_CANCELLED || this.status == PO_STATUS_LOST || this.status == PO_STATUS_RETURNED;
+
+  InvenTreePO.fromJson(Map<String, dynamic> json) : super.fromJson(json);
+
+  @override
+  InvenTreeModel createFromJson(Map<String, dynamic> json) {
+    return InvenTreePO.fromJson(json);
+  }
+}
+
+class InvenTreePOLineItem extends InvenTreeModel {
+  @override
+  String get URL => "order/po-line/";
+
+  @override
+  Map<String, dynamic> formFields() {
+    return {
+      // TODO: @Guusggg Not sure what will come here.
+      // "quantity": {},
+      // "reference": {},
+      // "notes": {},
+      // "order": {},
+      // "part": {},
+      "received": {},
+      // "purchase_price": {},
+      // "purchase_price_currency": {},
+      // "destination": {}
+    };
+  }
+
+  double get quantity => jsondata['quantity'] ?? 0;
+
+  double get received => jsondata['received'] ?? 0;
+
+  String get reference => jsondata['reference'] ?? "";
+
+  int get order => jsondata['order'] ?? -1;
+
+  int get part => jsondata['part'] ?? -1;
+
+  double get purchasePrice => double.parse(jsondata['purchase_price']);
+
+  String get purchasePriceCurrency => jsondata['purchase_price_currency'] ?? "";
+
+  String get purchasePriceString => jsondata['purchase_price_string'] ?? "";
+
+  int get destination => jsondata['destination'] ?? -1;
+
+  Map<String, dynamic> get destinationDetail => jsondata['destination_detail'];
+
+  InvenTreePOLineItem() : super();
+
+  InvenTreePOLineItem.fromJson(Map<String, dynamic> json)
+      : super.fromJson(json);
+
+  @override
+  InvenTreeModel createFromJson(Map<String, dynamic> json) {
+    return InvenTreePOLineItem.fromJson(json);
+  }
+}