Tehan is a surname. Notable people with the surname include: Dan Tehan (born 1968), politician Joseph Tehan, poker player Marie Tehan (1940–2004), politician Robert Emmet Tehan (1905–1975), jurist Tom Tehan (1916–1996), politician Tehan Tuomela (2005-, Keisari) tehan kikkeli (2005-, kuningas ollirr)