SS Tynwald may refer to:
, served with the Isle of Man Steam Packet Company from 1846 to 1866 , served with the Isle of Man Steam Packet Company from 1866 to 1888 , served with the Isle of Man Steam Packet Company from 1891 to 1934 RMS Tynwald (1936), served with the Isle of Man Steam Packet Company from 1936 to 1939; requisitioned by the Royal Navy in 1939 and sunk in 1942 TSS Tynwald (1947), served with the Isle of Man Steam Packet Company from 1947 to 1974 (IOMSPCo. 1986–1990) ex-Antrim Princess; previous Manx service with Sealink