|Full name||Árni Sveinsson|
|Date of birth||12 February 1956|
|Place of birth||Iceland|
|1978–1979||→ Excelsior (loan)||4||(2)|
|* Senior club appearances and goals counted for the domestic league only.
Árni began his career with ÍA and made his senior debut during the 1973 season. He went on to play 199 league matches for the club, scoring 28 goals. During the winter of 1978–79, he had a spell with Dutch Eerste Divisie side SBV Excelsior, where he scored twice in four appearances. In 1987, Árni joined 3. deild club Stjarnan, where was a part of the team that won successive promotions in 1988 and 1989. In total, he played 64 league matches for Stjarnan and scored 42 goals. Árni played three games for Aris Bonnevoie in Luxembourg in the 1990–91 season, before signing with Dalvík upon his return to Iceland. After a year with Dalvík, he returned to Stjarnan for one season before retiring from football in 1992.
As a youth, Árni won seven caps for the Iceland national under-19 football team. He made scored his first international goal in the 5–3 win against Scotland U19 on 12 April 1974, and scored twice in a 5–1 win over Faroe Islands U19 later the same year. Árni won his first senior cap on 23 June 1975 as Iceland recorded a 6–0 victory over the Faroe Islands. He netted his first senior goal for Iceland in his second match, a 1–1 draw with Norway. Árni went on to make 50 appearances for his country over the following 10 seasons, scoring four goals. His final international cap came on 12 July 1985, as he played the full match in Iceland's 1–0 win over the Faroe Islands.
- Árni Sveinsson international appearances at ksi.is