Gustavo Hernando Aguirre (born 8 April 1977 in Buenos Aires^[1]) is a retired Argentine athlete who specialised in the 400 metres.^[2] He competed at the 2000 Summer Olympics failing to qualify for the second round.

His 400 metres personal best of 46.18, set in 1999, is the standing national record. His 800 metres personal best is 1:47.23, set in 2007.

Year	Competition	Venue	Position	Event	Notes
Representing  Argentina
1992	South American Youth Championships	Santiago, Chile	1st	400 m	49.99
			1st	800 m	1:57.27
1994	South American Junior Championships	Santa Fe, Argentina	4th	400 m	49.46
			2nd	4x400 m relay	3:17.93
	Ibero-American Championships	Mar del Plata, Argentina	5th	4x400m relay	3:10.51
1995	Pan American Games	Mar del Plata, Argentina	16th (h)	400 m	48.84
	Pan American Junior Championships	Santiago, Chile	8th (h)	400 m	49.23
	South American Junior Championships	Santiago, Chile	2nd	400 m	48.19
			3rd	4x400 m relay	3:16.63
1996	South American Junior Championships	Bucaramanga, Colombia	1st	400 m	48.3
			3rd	800 m	1:52.4
			3rd	4x100 m relay	41.4
			5th	4x400 m relay	3:20.5
	World Junior Championships	Sydney, Australia	34th (h)	400 m	48.46
1997	South American Championships	Mar del Plata, Argentina	3rd	400 m	47.52
			4th	4x400 m relay	3:10.33
1998	Ibero-American Championships	Lisbon, Portugal	8th	800 m	1:53.52
1999	South American Championships	Bogotá, Colombia	4th	800 m	1:51.21
			3rd	4x400 m relay	3:08.53
2000	Ibero-American Championships	Rio de Janeiro, Brazil	3rd	400 m	46.69
			3rd	4x400 m relay	3:12.45
	Olympic Games	Sydney, Australia	58th (h)	400 m	47.03
2001	South American Championships	Manaus, Brazil	4th	400 m	46.93
			3rd	4x400 m relay	3:13.88
2005	South American Championships	Cali, Colombia	3rd	400 m	46.43
			3rd	4x400 m relay	3:08.61
2006	South American Championships	Tunja, Colombia	5th	400 m	47.86
			3rd	4x100 m relay	40.47
			4th	4x400 m relay	3:12.34
2007	Pan American Games	Rio de Janeiro, Brazil	7th	800 m	1:47.23
2008	Ibero-American Championships	Iquique, Chile	11th (h)	800 m	1:53.51

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