diff --git a/docs/customization/custom-fields.md b/docs/customization/custom-fields.md
index 7dc82e179..612faefed 100644
--- a/docs/customization/custom-fields.md
+++ b/docs/customization/custom-fields.md
@@ -16,6 +16,7 @@ Custom fields may be created by navigating to Customization > Custom Fields. Net
 * Decimal: A fixed-precision decimal number (4 decimal places)
 * Boolean: True or false
 * Date: A date in ISO 8601 format (YYYY-MM-DD)
+* Date & time: A date and time in ISO 8601 format (YYYY-MM-DD HH:MM:SS)
 * URL: This will be presented as a link in the web UI
 * JSON: Arbitrary data stored in JSON format
 * Selection: A selection of one of several pre-defined custom choices
diff --git a/netbox/extras/choices.py b/netbox/extras/choices.py
index 92d09e2ad..878d9df6a 100644
--- a/netbox/extras/choices.py
+++ b/netbox/extras/choices.py
@@ -13,6 +13,7 @@ class CustomFieldTypeChoices(ChoiceSet):
     TYPE_DECIMAL = 'decimal'
     TYPE_BOOLEAN = 'boolean'
     TYPE_DATE = 'date'
+    TYPE_DATETIME = 'datetime'
     TYPE_URL = 'url'
     TYPE_JSON = 'json'
     TYPE_SELECT = 'select'
@@ -27,6 +28,7 @@ class CustomFieldTypeChoices(ChoiceSet):
         (TYPE_DECIMAL, 'Decimal'),
         (TYPE_BOOLEAN, 'Boolean (true/false)'),
         (TYPE_DATE, 'Date'),
+        (TYPE_DATETIME, 'Date & time'),
         (TYPE_URL, 'URL'),
         (TYPE_JSON, 'JSON'),
         (TYPE_SELECT, 'Selection'),
diff --git a/netbox/extras/models/customfields.py b/netbox/extras/models/customfields.py
index 8141ca76d..f5ec3ce94 100644
--- a/netbox/extras/models/customfields.py
+++ b/netbox/extras/models/customfields.py
@@ -25,7 +25,7 @@ from utilities.forms.fields import (
     DynamicModelMultipleChoiceField, JSONField, LaxURLField,
 )
 from utilities.forms.utils import add_blank_choice
-from utilities.forms.widgets import DatePicker
+from utilities.forms.widgets import DatePicker, DateTimePicker
 from utilities.querysets import RestrictedQuerySet
 from utilities.validators import validate_regex
 
@@ -306,8 +306,9 @@ class CustomField(CloningMixin, ExportTemplatesMixin, ChangeLoggedModel):
         """
         if value is None:
             return value
-        if self.type == CustomFieldTypeChoices.TYPE_DATE and type(value) is date:
-            return value.isoformat()
+        if self.type in (CustomFieldTypeChoices.TYPE_DATE, CustomFieldTypeChoices.TYPE_DATETIME):
+            if type(value) in (date, datetime):
+                return value.isoformat()
         if self.type == CustomFieldTypeChoices.TYPE_OBJECT:
             return value.pk
         if self.type == CustomFieldTypeChoices.TYPE_MULTIOBJECT:
@@ -325,6 +326,11 @@ class CustomField(CloningMixin, ExportTemplatesMixin, ChangeLoggedModel):
                 return date.fromisoformat(value)
             except ValueError:
                 return value
+        if self.type == CustomFieldTypeChoices.TYPE_DATETIME:
+            try:
+                return datetime.fromisoformat(value)
+            except ValueError:
+                return value
         if self.type == CustomFieldTypeChoices.TYPE_OBJECT:
             model = self.object_type.model_class()
             return model.objects.filter(pk=value).first()
@@ -380,6 +386,10 @@ class CustomField(CloningMixin, ExportTemplatesMixin, ChangeLoggedModel):
         elif self.type == CustomFieldTypeChoices.TYPE_DATE:
             field = forms.DateField(required=required, initial=initial, widget=DatePicker())
 
+        # Date & time
+        elif self.type == CustomFieldTypeChoices.TYPE_DATETIME:
+            field = forms.DateTimeField(required=required, initial=initial, widget=DateTimePicker())
+
         # Select
         elif self.type in (CustomFieldTypeChoices.TYPE_SELECT, CustomFieldTypeChoices.TYPE_MULTISELECT):
             choices = [(c, c) for c in self.choices]
@@ -490,6 +500,10 @@ class CustomField(CloningMixin, ExportTemplatesMixin, ChangeLoggedModel):
         elif self.type == CustomFieldTypeChoices.TYPE_DATE:
             filter_class = filters.MultiValueDateFilter
 
+        # Date & time
+        elif self.type == CustomFieldTypeChoices.TYPE_DATETIME:
+            filter_class = filters.MultiValueDateTimeFilter
+
         # Select
         elif self.type == CustomFieldTypeChoices.TYPE_SELECT:
             filter_class = filters.MultiValueCharFilter
@@ -558,9 +572,17 @@ class CustomField(CloningMixin, ExportTemplatesMixin, ChangeLoggedModel):
             elif self.type == CustomFieldTypeChoices.TYPE_DATE:
                 if type(value) is not date:
                     try:
-                        datetime.strptime(value, '%Y-%m-%d')
+                        date.fromisoformat(value)
                     except ValueError:
-                        raise ValidationError("Date values must be in the format YYYY-MM-DD.")
+                        raise ValidationError("Date values must be in ISO 8601 format (YYYY-MM-DD).")
+
+            # Validate date & time
+            elif self.type == CustomFieldTypeChoices.TYPE_DATETIME:
+                if type(value) is not datetime:
+                    try:
+                        datetime.fromisoformat(value)
+                    except ValueError:
+                        raise ValidationError("Date and time values must be in ISO 8601 format (YYYY-MM-DD HH:MM:SS).")
 
             # Validate selected choice
             elif self.type == CustomFieldTypeChoices.TYPE_SELECT:
diff --git a/netbox/utilities/templates/builtins/customfield_value.html b/netbox/utilities/templates/builtins/customfield_value.html
index b3bccd716..a2b27ed2a 100644
--- a/netbox/utilities/templates/builtins/customfield_value.html
+++ b/netbox/utilities/templates/builtins/customfield_value.html
@@ -9,6 +9,8 @@
   {% checkmark value false="False" %}
 {% elif customfield.type == 'date' and value %}
   {{ value|annotated_date }}
+{% elif customfield.type == 'datetime' and value %}
+  {{ value|annotated_date }}
 {% elif customfield.type == 'url' and value %}
   <a href="{{ value }}">{{ value|truncatechars:70 }}</a>
 {% elif customfield.type == 'json' and value %}