Sai Ap Chau (Chinese: 細鴨洲) is a small island in the New Territories of Hong Kong. It is under the administration[clarification needed] of North District.
Sai Ap Chau is located in Ap Chau Bay (鴨洲海; Ap Chau Hoi) of Crooked Harbour, west of Ap Chau (鴨洲).[1]