Adrian Rúnason Justinussen (born 21 July 1998) is a Faroese professional footballer who plays as a forward for Danish 1st Division club AC Horsens and the Faroe Islands national team.
Justinussen is a youth academy graduate of Havnar Bóltfelag. On 24 May 2020, he completed a hat-trick by scoring three free kicks in nine minutes in a league match against Argja Bóltfelag. On 3 March 2021, he signed a contract extension with the club until the end of the 2023 season.
On 19 January 2024, Justinussen joined Danish 1st Division club Hillerød Fodbold on a two-year deal.
On 3 October 2025, fellow Danish 1st Division club AC Horsens announced the signing of Justinussen, effective from 1 January 2026. It was reported that Justinussen would receive a sign-on fee of 1 million Danish kroner, and after two years he would earn an additional 1 million.
Justinussen made his senior team debut for Faroe Islands on 29 March 2022 in a 1âÂÂ0 friendly win over Liechtenstein. He scored his first goal for the Faroe Islands in a 4âÂÂ0 friendly win against Liechtenstein on 22 March 2024.
Justinussen worked as an electrician while playing football in the Faroe Islands. After transferring to Hillerød, he became a full-time professional footballer.
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