diff --git a/src/backend/InvenTree/InvenTree/status_codes.py b/src/backend/InvenTree/InvenTree/status_codes.py
index 8d6aee3562..2cd3f110ba 100644
--- a/src/backend/InvenTree/InvenTree/status_codes.py
+++ b/src/backend/InvenTree/InvenTree/status_codes.py
@@ -41,6 +41,7 @@ class SalesOrderStatus(StatusCode):
         'primary',
     )  # Order has been issued, and is in progress
     SHIPPED = 20, _('Shipped'), 'success'  # Order has been shipped to customer
+    COMPLETE = 30, _('Complete'), 'success'  # Order is complete
     CANCELLED = 40, _('Cancelled'), 'danger'  # Order has been cancelled
     LOST = 50, _('Lost'), 'warning'  # Order was lost
     RETURNED = 60, _('Returned'), 'warning'  # Order was returned
@@ -53,7 +54,7 @@ class SalesOrderStatusGroups:
     OPEN = [SalesOrderStatus.PENDING.value, SalesOrderStatus.IN_PROGRESS.value]
 
     # Completed orders
-    COMPLETE = [SalesOrderStatus.SHIPPED.value]
+    COMPLETE = [SalesOrderStatus.SHIPPED.value, SalesOrderStatus.COMPLETE.value]
 
 
 class StockStatus(StatusCode):
diff --git a/src/backend/InvenTree/order/migrations/0099_alter_salesorder_status.py b/src/backend/InvenTree/order/migrations/0099_alter_salesorder_status.py
new file mode 100644
index 0000000000..de56926bc9
--- /dev/null
+++ b/src/backend/InvenTree/order/migrations/0099_alter_salesorder_status.py
@@ -0,0 +1,20 @@
+# Generated by Django 4.2.11 on 2024-04-03 00:40
+
+import django.core.validators
+from django.db import migrations, models
+import InvenTree.status_codes
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('order', '0098_auto_20231024_1844'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='salesorder',
+            name='status',
+            field=models.PositiveIntegerField(choices=InvenTree.status_codes.SalesOrderStatus.items(), default=10, help_text='Purchase order status', verbose_name='Status'),
+        ),
+    ]
diff --git a/src/backend/InvenTree/order/models.py b/src/backend/InvenTree/order/models.py
index 94710c01a9..8eae8562ed 100644
--- a/src/backend/InvenTree/order/models.py
+++ b/src/backend/InvenTree/order/models.py
@@ -1000,7 +1000,7 @@ class SalesOrder(TotalPriceMixin, Order):
                 )
 
             # Only an open order can be marked as shipped
-            elif not self.is_open:
+            elif not self.is_open and not self.is_completed:
                 raise ValidationError(_('Only an open order can be marked as complete'))
 
             elif self.pending_shipment_count > 0:
@@ -1042,9 +1042,12 @@ class SalesOrder(TotalPriceMixin, Order):
         if not self.can_complete(**kwargs):
             return False
 
-        self.status = SalesOrderStatus.SHIPPED.value
-        self.shipped_by = user
-        self.shipment_date = InvenTree.helpers.current_date()
+        if self.status == SalesOrderStatus.SHIPPED:
+            self.status = SalesOrderStatus.COMPLETE.value
+        else:
+            self.status = SalesOrderStatus.SHIPPED.value
+            self.shipped_by = user
+            self.shipment_date = InvenTree.helpers.current_date()
 
         self.save()
 
@@ -1098,7 +1101,7 @@ class SalesOrder(TotalPriceMixin, Order):
         )
 
     @transaction.atomic
-    def complete_order(self, user, **kwargs):
+    def ship_order(self, user, **kwargs):
         """Attempt to transition to SHIPPED status."""
         return self.handle_transition(
             self.status,
@@ -1109,6 +1112,18 @@ class SalesOrder(TotalPriceMixin, Order):
             **kwargs,
         )
 
+    @transaction.atomic
+    def complete_order(self, user, **kwargs):
+        """Attempt to transition to COMPLETED status."""
+        return self.handle_transition(
+            self.status,
+            SalesOrderStatus.COMPLETED.value,
+            self,
+            self._action_complete,
+            user=user,
+            **kwargs,
+        )
+
     @transaction.atomic
     def cancel_order(self):
         """Attempt to transition to CANCELLED status."""
diff --git a/src/backend/InvenTree/order/serializers.py b/src/backend/InvenTree/order/serializers.py
index a1da09f21b..12f8e3b86d 100644
--- a/src/backend/InvenTree/order/serializers.py
+++ b/src/backend/InvenTree/order/serializers.py
@@ -1288,7 +1288,7 @@ class SalesOrderCompleteSerializer(serializers.Serializer):
 
         user = getattr(request, 'user', None)
 
-        order.complete_order(
+        order.ship_order(
             user, allow_incomplete_lines=str2bool(data.get('accept_incomplete', False))
         )
 
diff --git a/src/backend/InvenTree/order/templates/order/sales_order_base.html b/src/backend/InvenTree/order/templates/order/sales_order_base.html
index f184d8d2bc..e1ed302804 100644
--- a/src/backend/InvenTree/order/templates/order/sales_order_base.html
+++ b/src/backend/InvenTree/order/templates/order/sales_order_base.html
@@ -88,7 +88,11 @@ src="{% static 'img/blank_image.png' %}"
     <button type='button' class='btn btn-success' id='complete-order-shipments' title='{% trans "Ship Items" %}'>
         <span class='fas fa-truck'></span> {% trans "Ship Items" %}
     </button>
+    <button type='button' class='btn btn-success' id='ship-order' title='{% trans "Mark As Shipped" %}'>
+        <span class='fas fa-check-circle'></span> {% trans "Mark As Shipped" %}
+    </button>
     {% endif %}
+    {% elif order.status == SalesOrderStatus.SHIPPED %}
     <button type='button' class='btn btn-success' id='complete-order' title='{% trans "Complete Sales Order" %}'>
         <span class='fas fa-check-circle'></span> {% trans "Complete Order" %}
     </button>
@@ -286,6 +290,15 @@ $("#cancel-order").click(function() {
     );
 });
 
+$("#ship-order").click(function() {
+    shipSalesOrder(
+        {{ order.pk }},
+        {
+            reload: true,
+        }
+    );
+});
+
 $("#complete-order").click(function() {
     completeSalesOrder(
         {{ order.pk }},
diff --git a/src/backend/InvenTree/order/test_sales_order.py b/src/backend/InvenTree/order/test_sales_order.py
index da8bcecb0e..b394147971 100644
--- a/src/backend/InvenTree/order/test_sales_order.py
+++ b/src/backend/InvenTree/order/test_sales_order.py
@@ -211,7 +211,7 @@ class SalesOrderTest(TestCase):
             self.order.can_complete(raise_error=True)
 
         # Now try to ship it - should fail
-        result = self.order.complete_order(None)
+        result = self.order.ship_order(None)
         self.assertFalse(result)
 
     def test_complete_order(self):
@@ -225,8 +225,8 @@ class SalesOrderTest(TestCase):
 
         self.assertEqual(SalesOrderAllocation.objects.count(), 2)
 
-        # Attempt to complete the order (but shipments are not completed!)
-        result = self.order.complete_order(None)
+        # Attempt to ship the order (but shipments are not completed!)
+        result = self.order.ship_order(None)
 
         self.assertFalse(result)
 
@@ -238,7 +238,7 @@ class SalesOrderTest(TestCase):
         self.assertTrue(self.shipment.is_complete())
 
         # Now, should be OK to ship
-        result = self.order.complete_order(None)
+        result = self.order.ship_order(None)
 
         self.assertTrue(result)
 
diff --git a/src/backend/InvenTree/templates/js/translated/sales_order.js b/src/backend/InvenTree/templates/js/translated/sales_order.js
index 53085cf180..f7c6eea8a3 100644
--- a/src/backend/InvenTree/templates/js/translated/sales_order.js
+++ b/src/backend/InvenTree/templates/js/translated/sales_order.js
@@ -473,7 +473,59 @@ function completePendingShipmentsHelper(shipments, shipment_idx, options={}) {
 
 
 /*
- * Launches a modal form to mark a SalesOrder as "complete"
+ * Launches a modal form to mark a SalesOrder as "shipped"
+ */
+function shipSalesOrder(order_id, options={}) {
+
+    constructForm(
+        `/api/order/so/${order_id}/complete/`,
+        {
+            method: 'POST',
+            title: '{% trans "Ship Sales Order" %}',
+            confirm: true,
+            fieldsFunction: function(opts) {
+                var fields = {
+                    accept_incomplete: {},
+                };
+
+                if (opts.context.is_complete) {
+                    delete fields['accept_incomplete'];
+                }
+
+                return fields;
+            },
+            preFormContent: function(opts) {
+                var html = `
+                <div class='alert alert-block alert-info'>
+                    {% trans "Ship this order?" %}
+                </div>`;
+
+                if (opts.context.pending_shipments) {
+                    html += `
+                    <div class='alert alert-block alert-danger'>
+                    {% trans "Order cannot be shipped as there are incomplete shipments" %}<br>
+                    </div>`;
+                }
+
+                if (!opts.context.is_complete) {
+                    html += `
+                    <div class='alert alert-block alert-warning'>
+                    {% trans "This order has line items which have not been completed." %}<br>
+                    {% trans "Shipping this order means that the order and line items will no longer be editable." %}
+                    </div>`;
+                }
+
+                return html;
+            },
+            onSuccess: function(response) {
+                handleFormSuccess(response, options);
+            }
+        }
+    );
+}
+
+/*
+ * Launches a modal form to mark a SalesOrder as "completed"
  */
 function completeSalesOrder(order_id, options={}) {
 
@@ -500,21 +552,6 @@ function completeSalesOrder(order_id, options={}) {
                     {% trans "Mark this order as complete?" %}
                 </div>`;
 
-                if (opts.context.pending_shipments) {
-                    html += `
-                    <div class='alert alert-block alert-danger'>
-                    {% trans "Order cannot be completed as there are incomplete shipments" %}<br>
-                    </div>`;
-                }
-
-                if (!opts.context.is_complete) {
-                    html += `
-                    <div class='alert alert-block alert-warning'>
-                    {% trans "This order has line items which have not been completed." %}<br>
-                    {% trans "Completing this order means that the order and line items will no longer be editable." %}
-                    </div>`;
-                }
-
                 return html;
             },
             onSuccess: function(response) {