Donald Nichols
Don or Donald Nichols or Nicholls could refer to: 

Donald Nichols (American football) (1901–1978), American college football player and attorney
Donald Nichols (spy) (1923–1992), U.S. Air Force officer
Donald G. Nichols (born 1931), member of the Florida House of Representatives
Don Nichols (1924–2017), American motorsport entrepreneur
Donald Nicholls, Baron Nicholls of Birkenhead (1933–2019), British barrister and Law Lord
Don Nicholls (1936–2023), Australian rules footballer

See also
Don Nickles (born 1948), former U.S. senator from Oklahoma