Marielys Rojas (or Marierlis Rojas, born April 30, 1986) is a Venezuelan athlete specializing in the high jump. Her personal best in the event is 1.90 meters achieved in 2008 in Ponce. This is the current national record.

On 27 October 2011, she was tested positive for the abuse of Norandrosterone. As a consequence, she was stripped of her silver medal obtained in the high jump, event at the Pan American Games and declared to be ineligible to compete for two years until 21 November 2013.^[1] Another source reports here disqualification as early as 16 July 2011 due to IAAF Rule 32.2.a.^[2]

• High jump: 1.90 m – Ponce, 29 March 2008
• Triple jump: 12.59 m (wind: +1.6 m/s) – Barquisimeto, 26 June 2004

Year	Competition	Venue	Position	Event	Notes
Representing  Venezuela
2002	Central American and Caribbean Junior Championships (U17)	Bridgetown, Barbados	1st	High jump	1.71 m
	South American Junior Championships / South American Games	Belém, Brazil	2nd	High jump	1.71 m
	South American Youth Championships	Asunción, Paraguay	3rd	High jump	1.66 m
			3rd	Triple jump	11.90 m w
2003	South American Junior Championships	Guayaquil, Ecuador	3rd	High jump	1.77 m
2004	South American Under-23 Championships	Barquisimeto, Venezuela	5th	Triple jump	12.59 m (wind: +1.6 m/s)
2005	South American Championships	Cali, Colombia	3rd	High jump	1.79 m
	Bolivarian Games	Armenia, Colombia	2nd	High jump	1.80 m
	South American Junior Championships	Rosario, Argentina	1st	High jump	1.76 m
2006	Ibero-American Championships	Ponce, Puerto Rico	3rd	High jump	1.84 m
	Central American and Caribbean Games	Cartagena, Colombia	5th	High jump	1.82 m
	South American U23 Championships / South American Games	Buenos Aires, Argentina	1st	High jump	1.87 m (NR)
2007	ALBA Games	Caracas, Venezuela	2nd	High jump	1.82 m
	South American Championships	São Paulo, Brazil	3rd	High jump	1.78 m
2008	Ibero-American Championships	Iquique, Chile	5th	High jump	1.75 m
	Central American and Caribbean Championships	Cali, Colombia	3rd	High jump	1.79 m
2011	South American Championships	Buenos Aires, Argentina	1st	High jump	1.80 m
	Central American and Caribbean Championships	Mayagüez, Puerto Rico	2nd	High jump	1.82 m‡
	World Championships	Daegu, South Korea	25th (q)	High jump	1.85 m‡
	Pan American Games	Guadalajara, Mexico	–	High jump	DQ†

^†: Disqualified because of doping.
^‡: Might be disqualified because of doping (to be verified).

• Marielys Rojas at World Athletics