diff --git a/inspire_schemas/utils.py b/inspire_schemas/utils.py
index 20b9f7c1..c664e13a 100644
--- a/inspire_schemas/utils.py
+++ b/inspire_schemas/utils.py
@@ -36,7 +36,7 @@
 import six
 from bleach.linkifier import LinkifyFilter
 from bleach.sanitizer import Cleaner
-from idutils import is_orcid
+from idutils import is_isni
 from inspire_utils.date import PartialDate
 from isbn import ISBN
 from jsonschema import Draft4Validator, RefResolver, draft4_format_checker
@@ -122,7 +122,12 @@
     'econf',
 ]
 
+ORCID_ISNI_RANGES = [
+    (15000000, 35000000),
+    (900000000000, 900100000000),
+]
 
+ORCID_URLS = ["http://orcid.org/", "https://orcid.org/"]
 # list produced from https://arxiv.org/archive/
 _NEW_CATEGORIES = {
     'acc-phys': 'physics.acc-ph',
@@ -437,6 +442,22 @@ def func_wrapper(self, *args, **kwargs):
     return func_wrapper
 
 
+def is_orcid(val):
+    """Test if argument is an ORCID ID.
+    See http://support.orcid.org/knowledgebase/
+        articles/116780-structure-of-the-orcid-identifier
+    """
+    for orcid_url in ORCID_URLS:
+        if val.startswith(orcid_url):
+            val = val[len(orcid_url):]
+            break
+    val = val.replace("-", "").replace(" ", "")
+    if is_isni(val):
+        val = int(val[:-1], 10)  # Remove check digit and convert to int.
+        return any(start <= val <= end for start, end in ORCID_ISNI_RANGES)
+    return False
+
+
 def author_id_normalize_and_schema(uid, schema=None):
     """Detect and normalize an author UID schema.
 
diff --git a/tests/unit/test_utils.py b/tests/unit/test_utils.py
index 196c3075..8aa38c43 100644
--- a/tests/unit/test_utils.py
+++ b/tests/unit/test_utils.py
@@ -33,7 +33,7 @@
 from inspire_schemas import errors, utils
 from inspire_utils.query import ordered
 
-from inspire_schemas.utils import normalize_collaboration_name
+from inspire_schemas.utils import is_orcid, normalize_collaboration_name
 
 
 def test_classify_field_returns_none_on_falsy_value():
@@ -1443,3 +1443,20 @@ def test_get_references_for_schema_returns_proper_schemas():
 )
 def test_normalize_collaboration_name(collaboration_name, expected_normalized_name):
     assert normalize_collaboration_name(collaboration_name) == expected_normalized_name
+
+
+def test_is_orcid():
+    orcids = [
+        "http://orcid.org/0000-0002-1825-0097",
+        "0000-0002-1825-0097",
+        "http://orcid.org/0000-0002-1825-0097",
+        "0000-0002-1694-233X",
+        "http://orcid.org/0000-0002-1694-233X",
+        "0009-0005-6000-7479",
+        "http://orcid.org/0009-0005-6000-7479",
+        "https://orcid.org/0009-0002-4767-9017",
+        "0009-0002-4767-9017",
+        "http://orcid.org/0009-0002-4767-9017",
+    ]
+    for orcid in orcids:
+        assert is_orcid(orcid)