Twiss is a surname, and may refer to:
Sir Frank Twiss (1910–1994), Royal Navy admiral Horace Twiss (1787–1849), English writer and politician Ian Twiss, Irish footballer Michael Twiss (born 1977), English footballer Peter Twiss (1921–2011), British test pilot Phil Twiss, Australian politician Richard Twiss (1954–2013), Native American educator and author, co-founder and president of Wiconi International Richard Twiss (footballer) (1909–1970), English footballer Richard Twiss (writer) (1747–1821), English writer on travel and chess Richard Q. Twiss (1920–2005), British scientist Sumner Twiss, American academic Tilly Devine (née Twiss, 1900–1970), Australian criminal Sir Travers Twiss (1809–1897), English jurist William Twiss (1745–1827), British army general
See also Twisse Mount Twiss, Antarctica Mount Twiss, Australia River Twiss in Yorkshire, England Twiss County, Western Australia Twiss parameters (accelerator physics)