John A. Williams (1925–2015) was an African-American author, journalist, and academic.
John A. Williams may also refer to: John A. Williams (judge) (1835–1900), American judge John Alan Williams (born 1960), American football player John Albert Williams (1866–1933), American Episcopal priest, journalist, and activist John Allen Williams (born 1945), American political scientist John Allen Williams (murderer) or John Allen Muhammad (1960–2009), American murderer
See also John Williams (disambiguation)