HNLMS Zeeleeuw (S803)

HNLMS Zeeleeuw (S803) may refer to one of the following submarines of the Royal Netherlands Navy:


 * HNLMS Zeeleeuw, a member of the 1953 Walrus class; the former American Balao-class submarine USS Hawkbill (SS-366); acquired by the Royal Netherlands Navy in 1953; sold for scrap in 1970
 * HNLMS Zeeleeuw, a member of the 1985 Walrus class; in active service