Mireille Gigandet-Donders (née Mireille Donders; born 7 July 1974) is a retired Swiss athlete who specialised in sprinting events.^[1] 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.

Year	Competition	Venue	Position	Event	Notes
Representing  Switzerland
1991	European Junior Championships	Thessaloniki, Greece	20th (h)	200 m	12.40
1992	World Junior Championships	Seoul, South Korea	28th (qf)	100 m	12.12
			21st (sf)	200 m	24.52
1993	European Junior Championships	San Sebastián, Spain	8th	200 m	23.98
			7th	4 × 100 m relay	46.06
1994	European Indoor Championships	Paris, France	11th (sf)	200 m	24.38
	European Championships	Helsinki, Finland	23rd (h)	200 m	23.97
			9th (h)	4 × 100 m relay	44.43
1996	European Indoor Championships	Stockholm, Sweden	12th (sf)	60 m	7.46
			9th (sf)	200 m	24.13
	Olympic Games	Atlanta, United States	38th (h)	100 m	11.67
			25th (h)	200 m	23.52
1997	World Indoor Championships	Paris, France	7th (sf)	200 m	23.30
	Universiade	Catania, Italy	7th	100 m	11.65
			7th	200 m	23.74
			9th (h)	4 × 400 m relay	3:41.45
1998	European Indoor Championships	Valencia, Spain	4th (h)	200 m	22.96[2]
1999	Universiade	Palma de Mallorca, Spain	7th	100 m	11.55
			7th	200 m	23.83
2000	European Indoor Championships	Ghent, Belgium	8th (sf)	200 m	23.47
	Olympic Games	Sydney, Australia	43rd (h)	100 m	11.63
			33rd (h)	200 m	23.44
2001	Universiade	Beijing, China	3rd	100 m	11.59
			4th	200 m	23.31

Outdoor

• 100 metres – 11.34 (+0.8 m/s) (Geneva 2001) former NR
• 200 metres – 23.06 (+1.2 m/s) (Lugano 2000)

Indoor

• 60 metres – 7.27 (Magglingen 1998) former NR
• 200 metres – 22.96 (Valencia 1998) former NR