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