diff --git a/batdetect2/targets/terms.py b/batdetect2/targets/terms.py
index 07f2a2e..e5934a8 100644
--- a/batdetect2/targets/terms.py
+++ b/batdetect2/targets/terms.py
@@ -25,6 +25,7 @@ from batdetect2.configs import load_config
 __all__ = [
     "call_type",
     "individual",
+    "data_source",
     "get_tag_from_info",
     "TermInfo",
     "TagInfo",
@@ -35,6 +36,16 @@ __all__ = [
 GENERIC_CLASS_KEY = "class"
 
 
+data_source = data.Term(
+    name="soundevent:data_source",
+    label="Data Source",
+    definition=(
+        "A unique identifier for the source of the data, typically "
+        "representing the project, site, or deployment context."
+    ),
+)
+
+
 call_type = data.Term(
     name="soundevent:call_type",
     label="Call Type",
@@ -225,6 +236,7 @@ term_registry = TermRegistry(
             *getmembers(terms, lambda x: isinstance(x, data.Term)),
             ("call_type", call_type),
             ("individual", individual),
+            ("data_source", data_source),
             (GENERIC_CLASS_KEY, generic_class),
         ]
     )