Mireille Gigandet-Donders (née Mireille Donders; born 7 July 1974) is a retired Swiss athlete who specialised in sprinting events. She represented her country at the 1996 and 2000 Summer Olympics without reaching the second round. She won the bronze medal in the 100 metres at the 2001 Summer Universiade. She broke the Swiss record in several events. Her record in the indoor 200 metres is still standing.