Arnaout is a surname derived from the ethnonym. Notable people with the name include:

  • Abbas Arnaout (born 1944), Jordanian director and writer
  • Abdul Qader Arnaout (1928–2004), Islamic scholar of Albanian origin
  • Adel Arnaout (born 1970), Lebanese-Canadian immigrant who was convicted of sending three letter bombs
  • Enaam Arnaout (born 1962), Syrian-American prisoner and detainee of the United States federal government
  • M. Amin Arnaout, Lebanese-American physician-scientist and nephrologist
  • Omar Arnaout (born 2000), Romanian singer