McNaught or MacNaught is a surname. Notable people with the surname include:
Anita McNaught (born 1965), British-New Zealand journalist and TV presenter
Erin McNaught (born 1982), the 2006 Miss Australia
Ian McNaught-Davis (fl 1950s-1980s), BBC TV presenter
James McNaught (1870–1919), Scottish footballer
Jane Macnaught, producer of British tv soap Coronation Street
John McNaught (1902–1970), Canadian radio broadcaster and writer
John Watson MacNaught (1904–1984), Canadian politician
Judith McNaught (born 1944), American writer
Ken McNaught (born 1955), Scottish footballer
Kenneth McNaught (1918–1997), Canadian historian
Robert H. McNaught (born 1956), Scottish-Australian astronomer
William McNaught (Glasgow) (1813–1881), engineer who compounded a beam engine
William McNaught (Rochdale) (1813–1881), engineer of Petrie and McNaught, who invented a variable cut off gear and governor for a Stationary steam engine
William Kirkpatrick McNaught (1845–1919), Canadian politician
Willie McNaught (born 1922), Scottish footballer