William Reynolds

• William Reynolds (actor) (1931–2022), American film and TV second lead
• William Reynolds (film editor) (1910–1997), American winner of two Academy Awards
• Bill Reynolds (producer), American rock musician and songwriter active since 2002

• William Reynolds (industrialist) (1758–1803), English ironmaster, built Ketley Canal
• William Bainbridge Reynolds (1855–1935), English metal craftsman and engineer
• William Neal Reynolds (1863–1951), American tobacco manufacturer

• William Reynolds (naval officer) (1815–1879), Union Navy admiral in American Civil War
• William Reynolds (VC) (1827–1869), Scottish private who received Victoria Cross
• William E. Reynolds (1860–1944), United States Coast Guard commandant

• William Reynolds (New Zealand politician) (1822–1899), New Zealand politician and businessman
• William H. Reynolds (New York politician), American real estate developer and New York state senator
• William Hayden Reynolds (1847–1935), American mayor of Orlando, Florida 1910–1913
• William James Reynolds (1856–1934), Irish nationalist politician and MP for East Tyrone, 1885–1895
• William George Waterhouse Reynolds, English Member of Parliament for Leicester South in 1922–23

• William Reynolds (theologian) (1544–1594), English Catholic biblical translator and scholar a/k/a Reginaldus
• William Craig Reynolds (1933–2004), American engineer and physicist
• William D. Reynolds (1867–1951), American Southern Presbyterian missionary and Bible translator in Korea
• William Morton Reynolds (1812–1876), American minister, college president and translator

American football

• William Ayres Reynolds (1874–1928), American college player and coach of football and baseball
• Billy Reynolds (American football) (1931–2002), American halfback in NFL and AFL

Baseball

• Bill Reynolds (catcher) (1884–1924), American catcher for New York Yankees
• Bill Reynolds (Negro leagues) (born 1929), American Negro leagues baseball player

Football

• William Reynolds (footballer, born 1870) (1870–after 1893), English left back
• William Reynolds (footballer, born 1879) (1879–1973), English forward
• Billy Reynolds (footballer) (1864–after 1892), English centre-forward

Auto racing

• Bill Reynolds, Australian driver in 1963 Armstrong 500

• Will Reynolds (c.1867–1902), American mass shooter of nine victims in Alabama
• William Bradford Reynolds (1942–2019), American lawyer; Assistant Attorney General 1981–88

• Bill Reynolds (Tea and Sympathy) in Robert Anderson's 1953 American play
• Bill Reynolds (The Passage) in 2012–16 series of American novels by Justin Cronin
• Bill Reynolds (Love Thy Neighbour) in 1972–76 British sitcom

• Reynolds-Morris House, in Philadelphia, Pennsylvania, built in 1786–87 by John and William Reynolds
• William F. Raynolds (1820–1894), American army officer and explorer
• Bill Rennells (born 1931), English journalist and radio broadcaster