Onisiforos Rousias (; born 15 July 1992) is a Cypriot professional footballer who plays as a striker for Cypriot Second Division club Ayia Napa.
Born in Paralimni, he began playing football with other children his age for Enosis Neon Paralimni Academy. He was the best goal-scorer for Cyprus National Under 17 league, scoring 26 goals and winning the League with EN Paralimni U-17 team.
Rousias skills and achievements caused English side Middlesbrough to sign him on 1 January 2009. Rousias stayed there for 2.5 years making appearances for Middlesbrough Reserves and Middlesbrough Under 18 team. At Middlesbrough, he improved his skills and prepared ready for a career in a Cypriot First Division team.
On 31 July 2011, Rousias returned to Cyprus for a transfer to Enosis Neon Paralimni. This time he was ready to take more chances, and prove that he was able to play for Enosis. Having 18 appearances and scoring two goals in 2011âÂÂ2012 season, Rousias showed that he could be considered one of the great talents on the island. In the 2012âÂÂ2013 season, Rousias was apparently sidelined by Enosis manager Ton Caanen, having only eight appearances (seven as a substitution), something that made him to ask for a free transfer. So Rousias left EN Paralimni on 28 December 2012.
Just a few days after Rousias left Enosis Neon Paralimni, Omonia showed their interest in him. On 1 January 2013, Rousias signed a 2.5 years contract with Omonia. He had 74 appearances with the club and scored 17 goals. On 26 May 2017, the club announced that with end of the season the player is released.
On 16 June 2021, Rousias signed a two-year contract until 2023 with Cypriot First Division club Anorthosis Famagusta.
Rousias represented Cyprus at youth level. In May 2014, he made his first appearance for the Cyprus first team squad against Japan.
AEK Larnaca