Kate Walsh or Katie Walsh may refer to:

• Kate Walsh (actress) (born 1967), American actress
• Kate Walsh (politician) (1947–2007), Irish politician
• Kate Walsh (presenter) (born 1981), contestant in The Apprentice (UK) series 5 and TV presenter
• Kate Walsh (singer) (born 1983), British singer
• Kate Richardson-Walsh (born 1980), English field hockey player
• Kate O'Beirne (Kate Walsh, born 1949), right-wing U.S. pundit, commentator and political analyst
• Katie Walsh (jockey) (born 1984), Irish jockey
• Katie Walsh (politician) (born 1984), American political operative and former White House Deputy Chief of Staff