diff --git a/invenio.cfg b/invenio.cfg
index fb6689cc..006881a2 100644
--- a/invenio.cfg
+++ b/invenio.cfg
@@ -577,6 +577,11 @@ RDM_RECORDS_RELATED_IDENTIFIERS_SCHEMES = {
             "validator": schemes.is_edms,
             "datacite": "EDMS"
         },
+        "atom": {
+            "label": _("ATOM"),
+            "validator": schemes.is_atom,
+            "datacite": "ATOM",
+        },
         "hal": {
             "label": "HAL",
             "validator": schemes.is_hal,
diff --git a/site/cds_rdm/schemes.py b/site/cds_rdm/schemes.py
index 93f5c847..042a47ab 100644
--- a/site/cds_rdm/schemes.py
+++ b/site/cds_rdm/schemes.py
@@ -24,6 +24,12 @@
 is_indico_regexp = re.compile(r"^[a-zA-Z0-9]+$", flags=re.I)
 inis_pattern = re.compile(r"^(?:\d+|RN:\d+)$", flags=re.I)
 edms_pattern = re.compile(r"^\d+$", flags=re.I)
+atom_pattern = re.compile(r"^[a-z0-9][a-z0-9-]*$", flags=re.I)
+
+
+def is_atom(val):
+    """Test if argument matches an AtoM slug/permalink segment."""
+    return atom_pattern.match(str(val).strip())
 
 
 def is_aleph(val):