Seyfi is both a Turkish surname and a given name. Notable people with the name include:
Given name Seyfi Arkan (1903–1966), Turkish architect Seyfi Dursunoğlu (1932–2020), Turkish showman Seyfi Düzgören (1880–1948), Turkish Army general Seyfi Havaeri (1920–2009), Turkish actor, screenwriter and film director Seyfi Öztürk (1927–2002), Turkish lawyer and politician
Surname Ali Rıza Seyfi (1879–1958), Turkish writer, historian and poet Tim Seyfi (born 1971), Turkish-German actor
Ship Seyfi (sunk on 25–26 May 1877), Turkish river monitor.