Bill Walsh (1931–2007) was an American football coach, most known for his career with the San Francisco 49ers.

Bill Walsh may also refer to:

• Bill Walsh (rugby league) (1891–1981), New Zealand rugby league player
• Bill Walsh (producer) (1913–1975), American film producer
• Bill Walsh (hurler) (1922–2013), Irish hurler
• Bill Walsh (footballer) (1923–2014), English footballer
• Bill Walsh (American football, born 1927) (1927–2012), American football player at University of Notre Dame, player and coach in the National Football League
• Bill Walsh (author) (1961–2017), American author and newspaper editor
• Bill Walsh (firefighter) (born 1957), American firefighter and television actor
• Bill Walsh, former drummer for punk band Cosmic Psychos
• Bill Walsh (comics), a villain from DC Comics

• Billy Walsh (disambiguation)
• William Walsh (disambiguation)
• Bill Walsh College Football, a 1993 American football videogame
• Bill Welsh (1911–2000), American television announcer
• William Welsh (disambiguation)