The ABC Wasp was an experimental 170 hp (127 kW) seven-cylinder radial engine designed by the noted British engineer Granville Bradshaw, and primarily built by ABC Motors Limited.

An order for twelve experimental ABC Wasp engines was placed with Guy Motors on 19 April 1918.

[1] Eight ABC Wasp engines were made by Crossley Motors Ltd of Manchester, England.

This World War I–era engine is noteworthy because it was one of the first in which the cylinders were coated with copper in an attempt to dissipate heat.

The ABC Wasp never evolved beyond the experimental stage, but it was the predecessor of the unsuccessful Dragonfly engine.