William or Bill Hanson may refer to:

• William Hanson (cricketer) (born 1982), English cricketer
• Bill Hanson (basketball) (born c. 1940), pro basketball player
• Bill Hanson (footballer) (1893–1946), Australian rules footballer

• William Hanson (engineer) (1810–1875), railway and water engineer in South Australia, brother of Richard Davies Hanson
• William F. Hanson (1887–1969), music composer
• William Cook Hanson (1909–1995), United States federal judge
• C. William Hanson, American internist, anesthesiologist and intensivist
• William Hanson (author) (born 1989), British author and etiquette coach

• William Hansen (disambiguation)
• William Hanson Dodge (1866–1932), American photographer