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

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