John A. Williams (disambiguation)

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