HSwMS Hajen

Three warships of Sweden have been named Hajen, after Hajen:


 * HSWMS Hajen, a submarine launched in 1904 and stricken in 1922.
 * HSWMS Hajen, a Hajen II-class submarine launched in 1917 and stricken in 1943.
 * HSWMS Hajen, a Hajen III-class submarine launched in 1954 and stricken in 1980.