William Lynn

William Lynn may refer to:

• Bill Lynn (1921–2000), American baseball player
• Billy Lynn (born 1947), former English professional footballer
• William Henry Lynn (1829–1915), Irish-born architect
• Msgr. William J. Lynn, Roman Catholic official on trial in 2012 in a conspiracy and endangerment/child sex abuse case in Philadelphia
• William J. Lynn III (born 1954), Deputy Secretary of Defense of the United States of America
• William Harkins Lynn (1888–1952), American actor who played Judge Gaffney in Harvey (1950)
• William Michael Lynn, professor at Cornell University's School of Hotel Administration