Kathy is a feminine first name. It may refer to:

In sports:

• Kathy Bald, international freestyle swimmer from Canada
• Kathy Radzuweit, German volleyball player
• Kathy Smallwood-Cook, the most successful female sprinter in British athletics history
• Kathy Sheehy, American water polo player
• Kathy Tough, Canadian volleyball player
• Kathy Watt, Australian female cycle racer

In television and film:

• Kathy Garver, television, stage, screen, and voice actress
• Kathy Greenwood, Canadian comedian and actress
• Kathy Griffin, American stand-up comedian whose career took off in the early 1990s
• Kathy Hilton, American actress, celebrity and socialite
• Kathy Staff, British actress born in Dukinfield, Cheshire, England, United Kingdom

In music:

• Kathy Foster, bassist/drummer from Portland Oregon in various bands including The Thermals and All Girl Summer Fun Band
• Kathy Leander, Swiss singer
• Kathy Valentine, the bassist for the all-girl pop band The Go-Gos

In politics:

• Kathy Stanton, Sinn Féin Member of the Northern Ireland Assembly in North Belfast
• Kathy Sullivan (Australian politician), Australian politician

In literature:

• Kathy Acker, American sex-positive feminist writer
• Kathy Stinson, Canadian children's writer
• Kathy Tyers, author
• Kathy Sierra, author of Head First -programming tutorial series, blogger, game developer.

In fiction:

• Kathy Anderson, fictional character in the popular American TV and radio sitcom Father Knows Best
• Kathy Mitchell, fictional character in the British soap opera EastEnders

In other fields:

• Kathy Butterly, sculptor
• Kathy Ireland, American model