McPeak is a surname. Notable people with the surname include:
Bill McPeak (1926–1991), American football player and coach Holly McPeak (born 1969), American beach volleyball player Mark McPeak (born 1968), Northern Irish bowls player Merrill McPeak (born 1936), American politician and Chief of Staff of the United States Air Force Sandy McPeak (1936–1997), American actor Tony McPeak (footballer), Scottish footballer Vivian McPeak (born 1958), American activist and musician