The Tipsy Nipper T.66 is an aerobatic light aircraft, developed in 1952 by Ernest Oscar Tips of Avions Fairey at Gosselies in Belgium. It was designed to be easy to fly, cheap to buy and cheap to maintain. It was designed for both factory production and homebuild. "Nipper" was the nickname of Ernest Tips' first grandchild.

Ernest Oscar Tips was a Belgian aircraft designer, who co-founded the Fairey Aviation Company in 1915 and its Belgian subsidiary Avions Fairey in 1931.