diff --git a/open-api/rest-catalog-open-api.py b/open-api/rest-catalog-open-api.py
index f8b3f5bd3771..30ae491248fa 100644
--- a/open-api/rest-catalog-open-api.py
+++ b/open-api/rest-catalog-open-api.py
@@ -106,6 +106,18 @@ class TableIdentifier(BaseModel):
     name: str
 
 
+class CatalogObjectIdentifier(RootModel[list[str]]):
+    """
+    Reference to a catalog object (for example, table, view, or namespace) as an ordered list of hierarchical levels. The object kind is determined by context (e.g. the endpoint or a companion type discriminator), not by the identifier structure alone.
+    """
+
+    root: list[str] = Field(
+        ...,
+        description='Reference to a catalog object (for example, table, view, or namespace) as an ordered list of hierarchical levels. The object kind is determined by context (e.g. the endpoint or a companion type discriminator), not by the identifier structure alone.',
+        examples=[['accounting', 'tax', 'paid']],
+    )
+
+
 class PrimitiveType(RootModel[str]):
     root: str = Field(..., examples=[['long', 'string', 'fixed[16]', 'decimal(10,2)']])
 
diff --git a/open-api/rest-catalog-open-api.yaml b/open-api/rest-catalog-open-api.yaml
index 2435cd43f0e5..b2404f7424ea 100644
--- a/open-api/rest-catalog-open-api.yaml
+++ b/open-api/rest-catalog-open-api.yaml
@@ -2267,6 +2267,17 @@ components:
           type: string
           nullable: false
 
+    CatalogObjectIdentifier:
+      description:
+        Reference to a catalog object (for example, table, view, or namespace) as
+        an ordered list of hierarchical levels.
+        The object kind is determined by context (e.g. the endpoint or a
+        companion type discriminator), not by the identifier structure alone.
+      type: array
+      items:
+        type: string
+      example: [ "accounting", "tax", "paid" ]
+
     PrimitiveType:
       type: string
       example: