Hilmar Örn Jónsson (born 6 May 1996) is an Icelandic athlete specialising in the hammer throw.^[3] He represented his country at the 2017 World Championships without reaching the final.

His personal best in the event is 77.10 m set in Hafnarfjördur, Iceland in August 2020.^[3]

Both of his parents used to be athletes; his father Jón Sigurjónsson was a hammer thrower while his mother Guðbjörg Lilja Svansdóttir was a high jumper.^[1]

Year	Competition	Venue	Position	Event	Notes
Representing  Iceland
2013	World Youth Championships	Donetsk, Ukraine	25th (q)	Shot put (5 kg)	17.86 m
			17th (q)	Hammer throw (5 kg)	70.98 m
	European Junior Championships	Rieti, Italy	7th	Hammer throw (6 kg)	71.85 m
2014	World Junior Championships	Eugene, United States	3rd (q)	Hammer throw (6 kg)	76.03 m1
2015	Games of the Small States of Europe	Reykjavík, Iceland	5th	Discus throw	43.96 m
	European Junior Championships	Eskilstuna, Sweden	–	Hammer throw (6 kg)	NM
2017	European U23 Championships	Bydgoszcz, Poland	7th	Hammer throw	69.96 m
	World Championships	London, United Kingdom	27th (q)	Hammer throw	71.12 m
2022	Championships of the Small States of Europe	Marsa, Malta	2nd	Hammer throw	70.95 m
	World Championships	Eugene, United States	24th (q)	Hammer throw	72.72 m
	European Championships	Munich, Germany	12th	Hammer throw	70.03 m
2023	World Championships	Budapest, Hungary	–	Hammer throw	NM
2024	European Championships	Rome, Italy	24th (q)	Hammer throw	72.05 m

¹No mark in the final

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