Óscar Husillos Domingo (born 18 July 1993)^[1] is a Spanish sprinter specialising in the 200 and 400 metres. He won the gold medal in the 400 m at the 2021 European Indoor Championships and a silver at the 2019 European Indoor Championships.

Husillos is the Spanish indoor record holder for the 300 m and 400 m, and a former record holder for the 200 m. He has won a total of 17 national titles, between outdoors and indoors.^[2]

During the final of the 2018 World Indoor Championships 400 m he ran a time of 44.92s, which would've-been an European Record and tied for sixth on the all-time list. But ultimately, he got disqualified after very slightly stepping over the adjacent lane.^[3]

Representing  Spain

Year	Competition	Venue	Position	Event	Time
2012	World Junior Championships	Barcelona, Spain	22nd (h)	200 m	21.82
			17th (h)	4 × 100 m relay	41.08
2014	IAAF World Relays	Nassau, Bahamas	–	4 × 200 m relay	DQ
	Mediterranean U23 Championships	Aubagne, France	6th	200 m	21.75
2016	European Championships	Amsterdam, Netherlands	9th (h)	4 × 100 m relay	39.15
2017	European Indoor Championships	Belgrade, Serbia	9th (sf)	400 m i	47.83
	European Team Championships Super League	Lille, France	8th	200 m	20.97
			1st	4 × 400 m relay	3:02.32
	World Championships	London, United Kingdom	14th (sf)	400 m	45.16
			5th	4 × 400 m relay	3:00.65
2018	World Indoor Championships	Birmingham, United Kingdom	1st (sf)	400 m i	45.691
	European Championships	Berlin, Germany	6th	400 m	45.61
			3rd	4 × 400 m relay	3:00.78
2019	European Indoor Championships	Glasgow, United Kingdom	2nd	400 m i	45.66
			2nd	4 × 400 m relay i	3:06.32
	European Team Championships Super League	Bydgoszcz, Poland	3rd	400 m	46.36
			4th	4 × 400 m relay	3:04.52
	World Championships	Doha, Qatar	14th (h)	4 × 400 m relay	3:04.27
2021	European Indoor Championships	Toruń, Poland	1st	400 m i	46.22
	World Relays	Chorzów, Poland	13th (h)	4 × 400 m relay	3:06.09
	Olympic Games	Tokyo, Japan	43rd (h)	400 m	48.05
2022	Ibero-American Championships	La Nucía, Spain	2nd	4 × 400 m relay	3:04.05
	World Championships	Eugene, OR, United States	11th (h)	Mixed 4 × 400 m relay	3:16.14
	European Championships	Munich, Germany	24th (h)	400 m	46.42
			4th	4 × 400 m relay	3:00.54
2023	European Indoor Championships	Istanbul, Turkey	4th	400 m i	46.24
			4th	4 × 400 m relay i	3:06.87
	European Games	Chorzów, Poland	15th	Mixed 4 × 400 m relay	3:16.79
	World Championships	Budapest, Hungary	15th (h)	4 × 400 m relay	3:02.64
2024	European Championships	Rome, Italy	5th	4 × 400 m relay	3:01.44
	Olympic Games	Paris, France	13th (h)	4 × 400 m relay	3:01.60
2025	European Indoor Championships	Apeldoorn, Netherlands	27th (h)	400 m i	47.95
			2nd	4 × 400 m relay	3:05.18

¹Disqualified in the final

• 200 metres – 20.74 (+0.3 m/s, Guadalajara 2018)
  • 200 metres indoor – 20.68 (Valencia 2018) NR
• 300 metres – 33.00 (Palencia 2018)
  • 300 metres indoor – 32.39 (Salamanca 2018) NB
• 400 metres – 44.73 (Madrid 2018)
  • 400 metres indoor – 45.58 (Madrid 2023) NR

• Spanish Athletics Championships
  • 200 metres: 2016
  • 400 metres: 2017, 2018, 2019, 2021, 2022, 2023, 2024
  • 4 × 400 m relay: 2017
• Spanish Indoor Athletics Championships
  • 200 metres: 2014, 2016, 2018
  • 400 metres: 2017, 2019, 2021, 2023, 2024

• Óscar Husillos at World Athletics
• Óscar Husillos at RFEA (in Spanish)
• Óscar Husillos at Olympedia
• Oscar Husillos at Olympics.com
• Oscar Husillos at the Paris 2024 Summer Olympics
• Óscar Husillos Domingo (and here) at the Comité Olímpico Español (in Spanish) (archived)
• Óscar Husillos – COE – Paris 2024 (in Spanish)