Romanes is a surname. Notable people with this surname include:
- Ethel Romanes (1856–1927), British writer and religious activist
- George Romanes (1848–1894), Canadian-Scots biologist and physiologist
- George John Romanes (anatomist) (1916–2014), Scottish anatomist and professor of anatomy
- Glenyys Romanes (born 1945), Australian politician
- Muriel Romanes (born 1946), British TV actress and stage director