diff --git a/langdspy/__init__.py b/langdspy/__init__.py
index 5467281..e84c4b9 100644
--- a/langdspy/__init__.py
+++ b/langdspy/__init__.py
@@ -1,4 +1,4 @@
-from .field_descriptors import InputField, OutputField, InputFieldList, HintField, OutputFieldEnum
+from .field_descriptors import InputField, OutputField, InputFieldList, HintField, OutputFieldEnum, OutputFieldEnumList
 from .prompt_strategies import PromptSignature, PromptStrategy, DefaultPromptStrategy
 from .prompt_runners import PromptRunner, RunnableConfig, Prediction, MultiPromptRunner
 from .model import Model, TrainedModelState
diff --git a/langdspy/field_descriptors.py b/langdspy/field_descriptors.py
index 5715ec0..122101e 100644
--- a/langdspy/field_descriptors.py
+++ b/langdspy/field_descriptors.py
@@ -138,4 +138,22 @@ def format_prompt_description(self, llm_type: str):
         if llm_type == "openai":
             return f"{self._start_format_openai()}: One of: {choices_str} - {self.desc}"
         elif llm_type == "anthropic":
-            return f"{self._start_format_anthropic()}One of: <choices>{choices_str}</choices> - {self.desc}</{self.name}>"
\ No newline at end of file
+            return f"{self._start_format_anthropic()}One of: <choices>{choices_str}</choices> - {self.desc}</{self.name}>"
+
+class OutputFieldEnumList(OutputField):
+    def __init__(self, name: str, desc: str, enum: Enum, **kwargs):
+        kwargs['enum'] = enum
+        if not 'transformer' in kwargs:
+            kwargs['transformer'] = transformers.as_enum_list
+        if not 'validator' in kwargs:
+            kwargs['validator'] = validators.is_subset_of
+            kwargs['choices'] = [e.name for e in enum]
+        super().__init__(name, desc, **kwargs)
+    
+    def format_prompt_description(self, llm_type: str):
+        enum = self.kwargs.get('enum')
+        choices_str = ", ".join([e.name for e in enum])
+        if llm_type == "openai":
+            return f"{self._start_format_openai()}: A comma-separated list of one or more of: {choices_str} - {self.desc}"
+        elif llm_type == "anthropic":
+            return f"{self._start_format_anthropic()}A comma-separated list of one or more of: <choices>{choices_str}</choices> - {self.desc}</{self.name}>"
\ No newline at end of file
diff --git a/langdspy/transformers.py b/langdspy/transformers.py
index c5b753a..7eef24c 100644
--- a/langdspy/transformers.py
+++ b/langdspy/transformers.py
@@ -21,4 +21,12 @@ def as_enum(val: str, kwargs: Dict[str, Any]) -> Enum:
     try:
         return enum_class[val.upper()]
     except KeyError:
-        raise ValueError(f"{val} is not a valid member of the {enum_class.__name__} enumeration")
\ No newline at end of file
+        raise ValueError(f"{val} is not a valid member of the {enum_class.__name__} enumeration")
+
+def as_enum_list(val: str, kwargs: Dict[str, Any]) -> List[Enum]:
+    enum_class = kwargs['enum']
+    values = [v.strip() for v in val.split(",")]
+    try:
+        return [enum_class[v.upper()] for v in values]
+    except KeyError as e:
+        raise ValueError(f"{e.args[0]} is not a valid member of the {enum_class.__name__} enumeration")
\ No newline at end of file
diff --git a/langdspy/validators.py b/langdspy/validators.py
index a2d0453..a13cb6b 100644
--- a/langdspy/validators.py
+++ b/langdspy/validators.py
@@ -24,7 +24,6 @@ def is_one_of(input, output_val, kwargs) -> bool:
     if not kwargs.get('choices'):
         raise ValueError("is_one_of validator requires 'choices' keyword argument")
 
-
     none_ok = False
     if kwargs.get('none_ok', False):
         none_ok = True
@@ -49,4 +48,25 @@ def is_one_of(input, output_val, kwargs) -> bool:
         logger.error(f"Field must be one of {kwargs.get('choices')}, not {output_val}")
         import traceback
         traceback.print_exc()
+        return False
+
+def is_subset_of(input, output_val, kwargs) -> bool:
+    if not kwargs.get('choices'):
+        raise ValueError("is_subset_of validator requires 'choices' keyword argument")
+    
+    none_ok = kwargs.get('none_ok', False)
+    if none_ok and output_val.lower().strip() == "none":
+        return True
+    
+    try:
+        values = [v.strip() for v in output_val.split(",")]
+        if not kwargs.get('case_sensitive', False):
+            choices = [c.lower() for c in kwargs['choices']]
+            values = [v.lower() for v in values]
+        for value in values:
+            if value not in choices:
+                return False
+        return True
+    except Exception as e:
+        logger.error(f"Field must be a comma-separated list of one or more of {kwargs.get('choices')}, not {output_val}")
         return False
\ No newline at end of file
diff --git a/tests/test_field_descriptors.py b/tests/test_field_descriptors.py
index d630791..9734e0e 100644
--- a/tests/test_field_descriptors.py
+++ b/tests/test_field_descriptors.py
@@ -1,5 +1,6 @@
 import pytest
-from langdspy.field_descriptors import InputField, InputFieldList
+from enum import Enum
+from langdspy.field_descriptors import InputField, InputFieldList, OutputField, OutputFieldEnum, OutputFieldEnumList
 
 def test_input_field_initialization():
     field = InputField("name", "description")
@@ -35,4 +36,26 @@ def test_input_field_list_format_prompt_value():
 
 def test_input_field_list_format_prompt_value_empty():
     field = InputFieldList("name", "description")
-    assert field.format_prompt_value([], "openai") == "✅name: NO VALUES SPECIFIED"
\ No newline at end of file
+    assert field.format_prompt_value([], "openai") == "✅name: NO VALUES SPECIFIED"
+
+class TestEnum(Enum):
+    VALUE1 = "value1"
+    VALUE2 = "value2"
+    VALUE3 = "value3"
+
+def test_output_field_enum_list_initialization():
+    field = OutputFieldEnumList("name", "description", TestEnum)
+    assert field.name == "name"
+    assert field.desc == "description"
+    print(field.kwargs)
+    assert field.kwargs['enum'] == TestEnum
+    assert field.transformer.__name__ == "as_enum_list"
+    # assert field.kwargs['transformer'].__name__ == "as_enum_list"
+    assert field.validator.__name__ == "is_subset_of"
+    # assert field.kwargs['validator'].__name__ == "is_subset_of"
+    assert field.kwargs['choices'] == ["VALUE1", "VALUE2", "VALUE3"]
+
+def test_output_field_enum_list_format_prompt_description():
+    field = OutputFieldEnumList("name", "description", TestEnum)
+    assert "A comma-separated list of one or more of: VALUE1, VALUE2, VALUE3" in field.format_prompt_description("openai")
+    assert "A comma-separated list of one or more of: <choices>VALUE1, VALUE2, VALUE3</choices>" in field.format_prompt_description("anthropic")
diff --git a/tests/test_transformers.py b/tests/test_transformers.py
index 9bd2398..a46cb01 100644
--- a/tests/test_transformers.py
+++ b/tests/test_transformers.py
@@ -27,4 +27,17 @@ class Fruit(Enum):
     assert transformers.as_enum("BANANA", {"enum": Fruit}) == Fruit.BANANA
     
     with pytest.raises(ValueError):
-        transformers.as_enum("CHERRY", {"enum": Fruit})
\ No newline at end of file
+        transformers.as_enum("CHERRY", {"enum": Fruit})
+
+def test_as_enum_list():
+    class Fruit(Enum):
+        APPLE = 1
+        BANANA = 2
+        CHERRY = 3
+    
+    assert transformers.as_enum_list("APPLE", {"enum": Fruit}) == [Fruit.APPLE]
+    assert transformers.as_enum_list("BANANA, CHERRY", {"enum": Fruit}) == [Fruit.BANANA, Fruit.CHERRY]
+    assert transformers.as_enum_list("APPLE,BANANA,CHERRY", {"enum": Fruit}) == [Fruit.APPLE, Fruit.BANANA, Fruit.CHERRY]
+    
+    with pytest.raises(ValueError):
+        transformers.as_enum_list("DURIAN", {"enum": Fruit})
\ No newline at end of file
diff --git a/tests/test_validators.py b/tests/test_validators.py
index 18e1bb4..1ae4030 100644
--- a/tests/test_validators.py
+++ b/tests/test_validators.py
@@ -14,4 +14,22 @@ def test_is_one_of():
     assert validators.is_one_of({}, 'none', {'choices': ['apple', 'banana'], 'none_ok': True}) == True
     
     with pytest.raises(ValueError):
-        validators.is_one_of({}, 'apple', {})
\ No newline at end of file
+        validators.is_one_of({}, 'apple', {})
+
+def test_is_subset_of():
+    choices = ["apple", "banana", "cherry"]
+    
+    assert validators.is_subset_of({}, "apple", {"choices": choices}) == True
+    assert validators.is_subset_of({}, "apple,banana", {"choices": choices}) == True
+    assert validators.is_subset_of({}, "apple, banana, cherry", {"choices": choices}) == True
+    assert validators.is_subset_of({}, "APPLE", {"choices": choices, "case_sensitive": False}) == True
+    assert validators.is_subset_of({}, "APPLE,BANANA", {"choices": choices, "case_sensitive": False}) == True
+    
+    assert validators.is_subset_of({}, "durian", {"choices": choices}) == False
+    assert validators.is_subset_of({}, "apple,durian", {"choices": choices}) == False
+    
+    assert validators.is_subset_of({}, "none", {"choices": choices, "none_ok": True}) == True
+    assert validators.is_subset_of({}, "apple,none", {"choices": choices, "none_ok": True}) == False
+    
+    with pytest.raises(ValueError):
+        validators.is_subset_of({}, "apple", {})