Aircraft
- Aero L-29 DelfĂn (Czech: "Dolphin"), a military jet trainer aircraft of the 1960s
- De Havilland Dolphin, a 1930s British prototype light biplane
- Douglas Dolphin, 1930s amphibious flying boat
- Eurocopter AS365 Dauphin (Dolphin), medium-weight multipurpose twin-engine helicopter
- HH-65 Dolphin a derivative of the Eurocopter Dauphin for the US Coast Guard
- Sopwith Dolphin, a British First World War fighter plane
Read more about this topic: Dolphins (film)