Marcia Regina Cunha (born 26 July 1969), known as Marcia Fu, is a Brazilian female retired volleyball player.

She participated with the Brazil women's national volleyball team at the 1988 Summer Olympics, 1992 Summer Olympics and 1996 Summer Olympics,[1][2] winning the bronze medal at the 1996 Summer Olympics.

[3] She participated at the 1994 FIVB World Championship in Brazil.