Beaudoin is a surname of French origin related to Baldwin. Notable people with the surname include:

• Alexandre Beaudoin (born 1978), Canadian forensic fingerprint scientist
• Andre Beaudoin (fl. 1988–2008), Canadian Paralympian athlete
• Denise Beaudoin (born 1949), Quebec politician, member of the National Assembly of Quebec 2003–07
• Doug Beaudoin (born 1954), American football player
• Édouard Beaudoin (fl. 1900–1908), French Olympic archer
• Eric Beaudoin (born 1980), Canadian ice hockey player
• Gérald Beaudoin (1929–2008), Canadian lawyer and senator
• Gilles Beaudoin (1919–2007), Quebec politician, Mayor of Trois-Rivières
• Kenneth Lawrence Beaudoin (c. 1913–1995), American poet
• Laurent Beaudoin (born 1938), Quebec businessman, CEO of Bombardier Inc.
• Léonel Beaudoin (1924–2021), Canadian politician, member of the Canadian House of Commons 1968–79
• Louise Beaudoin (born 1945), Quebec politician, member of the National Assembly of Quebec
• Louis-René Beaudoin (1912–1970), Canadian politician, Speaker of the Canadian House of Commons 1953–1957
• Marie-Andrée Beaudoin (fl. 2005–2009), Quebec politician, borough mayor of Ahuntsic-Cartierville
• Mathieu Beaudoin (born 1984), Canadian ice hockey player
• Mathieu Beaudoin (Canadian football) (born 1974), Canadian football player
• Michelle Beaudoin (born 1975), Canadian actress from Alberta
• Paul E. Beaudoin (born 1960), American composer, music theorist, and author
• Raymond O. Beaudoin (1918–1945), American army officer; recipient of the Medal of Honor for his actions in World War II
  • Eponym of the ship USNS Lt. Raymond O. Beaudoin (T-AP-189)
• Sean Beaudoin (contemporary), American author
• Serge Beaudoin (born 1952), Canadian ice hockey player
• Yves Beaudoin (born 1965), Canadian ice hockey player