Scott Armstrong may refer to:
J. Scott Armstrong (1937–2023), Wharton Business School professor Scott Armstrong (basketball) (1913–1997), American professional basketball player Scott Armstrong (journalist), former Washington Post journalist and author Scott Armstrong (politician) (born 1966), Canadian Member of Parliament Scott Armstrong (rugby union) (born 1986), rugby union player for Northampton Saints Scott Armstrong (wrestler) (born 1965), professional wrestler and referee Scott A. Armstrong, American oncologist Scott Armstrong, president and CEO of Group Health Cooperative
See also Scot Armstrong (born 1970), American screenwriter and producer