Brian O'Neil

Brian O'Neil may refer to:
 * Brian E. O'Neil (1921–1985), American philosopher
 * Brian O'Neil (footballer, born 1972), Scottish former footballer who played for Celtic, Aberdeen, Wolfsburg, Derby County and Preston North End
 * Brian O'Neil (footballer, born 1944), English former footballer who played for Burnley, Southampton and Huddersfield Town