diff --git a/netbox/dcim/choices.py b/netbox/dcim/choices.py
index e1d4a330a..6fc67020d 100644
--- a/netbox/dcim/choices.py
+++ b/netbox/dcim/choices.py
@@ -915,6 +915,16 @@ class InterfaceTypeChoices(ChoiceSet):
     # Coaxial
     TYPE_DOCSIS = 'docsis'
 
+    # SDI
+    TYPE_SDI_BNC_3G = 'sdi-bnc-3g'
+    TYPE_SDI_BNC_6G = 'sdi-bnc-6g'
+    TYPE_SDI_BNC_12G = 'sdi-bnc-12g'
+    TYPE_SDI_BNC_24G = 'sdi-bnc-24g'
+    TYPE_SDI_SFP_3G = 'sdi-sfp-3g'
+    TYPE_SDI_SFP_6G = 'sdi-sfp-6g'
+    TYPE_SDI_SFP_12G = 'sdi-sfp-12g'
+    TYPE_SDI_SFP_24G = 'sdi-sfp-24g'
+
     # PON
     TYPE_GPON = 'gpon'
     TYPE_XG_PON = 'xg-pon'
@@ -1097,6 +1107,19 @@ class InterfaceTypeChoices(ChoiceSet):
                 (TYPE_DOCSIS, 'DOCSIS'),
             )
         ),
+        (
+            _('SDI'),
+            (
+                (TYPE_SDI_BNC_3G, '3G-SDI (BNC)'),
+                (TYPE_SDI_BNC_6G, '6G-SDI (BNC)'),
+                (TYPE_SDI_BNC_12G, '12G-SDI (BNC)'),
+                (TYPE_SDI_BNC_24G, '24G-SDI (BNC)'),
+                (TYPE_SDI_SFP_3G, '3G-SDI (SFP)'),
+                (TYPE_SDI_SFP_6G, '6G-SDI (SFP)'),
+                (TYPE_SDI_SFP_12G, '12G-SDI (SFP)'),
+                (TYPE_SDI_SFP_24G, '24G-SDI (SFP)'),
+            )
+        ),
         (
             'PON',
             (