Ramona Portwich (born January 5, 1967 in Rostock) is an East German-German sprint canoer who competed from the late 1980s to the late 1990s. Competing in three Summer Olympics, she won five medals with three golds (K-2 500 m: 1992, K-4 500 m: 1998, 1996) and two silvers (K-2 500 m: 1992, K-4 500 m: 1996).
Portwich also won sixteen medals at the ICF Canoe Sprint World Championships with thirteen golds (K-2 500 m: 1990, 1991, 1995; K-2 5000 m: 1989, 1990, 1991, 1993; K-4 500 m: 1987, 1990, 1991, 1993, 1994, 1995), two silvers (K-4 200 m: 1994, 1995), and a bronze (K-2 500 m: 1993).