Aicher is a surname. Notable people with the surname include:
Anton Aicher (1859–1930), Austrian artistic theatre director Emma Aicher (born 2003), German-Swedish alpine skier Gretl Aicher (1928–2012), Austrian artistic theatre director Otl Aicher (1922–1991), German graphic designer and typographer
See also Eicher (disambiguation) Aich (disambiguation) Maximilian Aichern (1932–2026), Austrian Roman Catholic bishop