diff --git a/.changes/unreleased/Features-20240422-082925.yaml b/.changes/unreleased/Features-20240422-082925.yaml
new file mode 100644
index 00000000000..b2e029fcf38
--- /dev/null
+++ b/.changes/unreleased/Features-20240422-082925.yaml
@@ -0,0 +1,6 @@
+kind: Features
+body: Allows snapshots to take a list as a unique_key
+time: 2024-04-22T08:29:25.458309-04:00
+custom:
+  Author: agpapa
+  Issue: "9992"
diff --git a/core/dbt/artifacts/resources/v1/snapshot.py b/core/dbt/artifacts/resources/v1/snapshot.py
index 6164d953184..732e9a96b53 100644
--- a/core/dbt/artifacts/resources/v1/snapshot.py
+++ b/core/dbt/artifacts/resources/v1/snapshot.py
@@ -11,11 +11,11 @@
 class SnapshotConfig(NodeConfig):
     materialized: str = "snapshot"
     strategy: Optional[str] = None
-    unique_key: Optional[str] = None
     target_schema: Optional[str] = None
     target_database: Optional[str] = None
     updated_at: Optional[str] = None
     # Not using Optional because of serialization issues with a Union of str and List[str]
+    unique_key: Union[str, List[str], None] = None
     check_cols: Union[str, List[str], None] = None
 
     @classmethod
diff --git a/core/dbt/contracts/graph/model_config.py b/core/dbt/contracts/graph/model_config.py
index 14317f769b5..4658bca52e7 100644
--- a/core/dbt/contracts/graph/model_config.py
+++ b/core/dbt/contracts/graph/model_config.py
@@ -1,5 +1,5 @@
 from dataclasses import dataclass, field
-from typing import Any, Dict, List, Optional, Type
+from typing import Any, Dict, List, Optional, Type, Union
 
 from dbt.artifacts.resources import (
     ExposureConfig,
@@ -42,7 +42,7 @@ class UnitTestNodeConfig(NodeConfig):
 @dataclass
 class EmptySnapshotConfig(NodeConfig):
     materialized: str = "snapshot"
-    unique_key: Optional[str] = None  # override NodeConfig unique_key definition
+    unique_key: Union[str, List[str], None] = None  # override NodeConfig unique_key definition
 
 
 RESOURCE_TYPES: Dict[NodeType, Type[BaseConfig]] = {