Kerry Michelle Armstrong (born 3 January 1958) is an Australian film, television and stage actress. She is one of only two actresses to win two Australian Film Institute Awards in the same year, winning Best Actress in a Leading Role for Lantana and Best Actress in a Leading Role in a Television Drama for SeaChange in 2001.

After early television roles in Australia including Prisoner (1979) and Skyways (1980), Armstrong moved to the United States in 1981, where she played Ophelia in Hamlet and Isabella in Measure for Measure at the Arena Stage in Washington, D.C., and had a role in the soap opera Dynasty (1985–86). She returned to Australia in 1987. Her other television roles include MDA (2002–03) and Bed of Roses (2008–11).