Kathy Acker (1947–1997), American experimental novelist, and punk poet
Kathy Bald (born 1963), retired canadian freestyle swimmer
Kathy Bates (born 1948), American actress and film director
Kathy Burke (born 1964), English actress, comedian, playwright and theatre director
Kathy Foster (born 1960), retired Australian basketball player
Kathy Garver (born 1945), American voice-over actress
Kathy Greenwood (born 1962), Canadian actress and comedian
Kathy Griffin (born 1960), American actress and comedian
Kathy Hilton (born 1959), American actress, fashion designer and philanthropist
Kathy Mattea (born 1959), American country music and bluegrass performer
Kathy Radzuweit (born 1982), German volleyball player
Kathy Sheehy (born 1970), American water polo player
Kathy Sierra (born 1957), American programming instructor and game developer
Kathy Smallwood-Cook (born 1960), retired British sprinter
Kathy Staff (1928–2008), English actress
Kathy Sullivan (born 1942), Australian politician
Kathy Tough (born 1969), retired canadian volleyball player
Kathy Tyers (born 1952), American author and musician
Kathy Valentine (born 1959), American bass guitarist (The Go-Go's)
Kathy Watt (born 1964), Australian racing cyclist
Kathy Weston (born 1958), retired American middle distance runner
Kathy Whitmire (born 1946) Mayor of the city of Houston, Texas