Grampus Heritage and Training, Ltd., an archaeology and traditional skills organization in northern England.

An alternative common name for the orca

A versatile attack, reconnaissance and research sub used by the Blue Fleet in the anime series Blue Submarine No. 6

Nagoya Grampus Eight, a Japanese soccer club

Grampus (RR), a small 4 wheel railroad flatcar

Grampus, the genus that includes Risso's Dolphin as its only species

HMS Grampus, the name of a number of Royal Navy ships and submarines

USS Grampus, the name of a number of ships of the United States Navy

Grampus (TUGS) a character from the children's series TUGS

CSS Grampus, a Confederate river steamer

the Grampus class submarines, built in the style of HMS Grampus (N56)