What does UCSA stand for?

Ukrainian Canadian Servicemen's Association

Uniform Conditional Sales Act - Legal shorthand (LWAP)

Uniform Controlled Substances Act - National Conference of Commissioners on Uniform State Laws

Union des Confederations Sportives Africaines - Association of African Sports Confederations - AASC - Yaounde, Cameroon (EAIO)

United Chian Societies of America - Later, CSA (EA)