Marek Niit (born 9 August 1987, in Kuressaare) is a sprinter from Estonia who won gold medal at the 200 metres at the 2006 World Junior Championships in Athletics in Beijing, China. He is also the current national record holder in 100 metres, 200 meters and 400 meters.

International competitions

Year	Competition	Venue	Position	Event	Result
Representing Estonia
2005	European Junior Championships	Kaunas, Lithuania	15th (sf)	100 m	10.85
2005	European Junior Championships	Kaunas, Lithuania	6th	200 m	21.47
2006	World Junior Championships	Beijing, China	1st	200 m	20.96 (-1.1 m/s)
2007	European Indoor Championships	Birmingham, United Kingdom	24th (h)	60 m	6.87
2007	European U23 Championships	Debrecen, Hungary	15th (sf)	200 m	27.46
2009	European U23 Championships	Kaunas, Lithuania	5th	200 m	20.88
	European U23 Championships	Kaunas, Lithuania	8th	4 × 400 m relay	3:12.30
	World Championships	Berlin, Germany	39th (h)	200 m	21.21
2011	World Championships	Daegu, South Korea	32nd (h)	100 m	10.53
2011	World Championships	Daegu, South Korea	29th (h)	200 m	20.90
2012	European Championships	Helsinki, Finland	21st (sf)	200 m	21.44
2012	Olympic Games	London, United Kingdom	38th (h)	200 m	20.82
2014	World Indoor Championships	Sopot, Poland	11th (sf)	400 m	47.67
	European Championships	Zürich, Switzerland	23rd (h)	200 m	21.04
			9th (sf)	400 m	45.80
			12th (h)	4 × 100 m relay	39.52
2015	European Indoor Championships	Prague, Czech Republic	23rd (h)	400 m	47.79
2016	World Indoor Championships	Portland, United States	18th (h)	400 m	47.39
	European Championships	Amsterdam, Netherlands	17th (h)	100 m	10.48
			23rd (h)	200 m	21.93
			15th (h)	4x400 m relay	3:10.63