Konstantinos "Kosta" Barbarouses (Greek: Κωνσταντίνος "Κώστας" Μπαρμπαρούσης; born 19 February 1990) is a New Zealand professional footballer who plays as a winger for A-League Men club Wellington Phoenix FC.

Before turning professional Barbarouses played for St. Patrick's College and for local clubs Wellington Olympic and Miramar Rangers in New Zealand's Central Premier League.

Barbarouses played his first match starting in the first team line-up against Newcastle Jets on 4 November 2009, assisting Chris Greenacre's goal with a back-heel pass.

On 18 July 2011, Fairfax News NZ announced that Barbarouses had signed a three-year contract with Russian side Alania Vladikavkaz.

[14][15][16] On 8 March 2016, it was announced that Barbarouses would leave Melbourne Victory at the end of the season to rejoin his hometown club Wellington Phoenix on a three-year contract.

[21] Having missed the majority of the 2021–22 season at Sydney FC due to an ankle fracture, Barbarouses returned to his hometown club for a third stint, signing a two-year contract.

[22] On 20 January 2025, Barbarouses scored his 100th A-League Men goal in a 2–1 away win against Macarthur FC at Campbelltown Sports Stadium, Sydney.

[24] As a member of the national Under-20 side he played an integral part in the 2008 OFC U-20 Championship qualification tournament for the 2009 Under-20 World Cup, scoring two goals in the three pool matches.

Although he scored four goals in the five pool matches at this 2008 Beijing Olympics qualifying tournament, Barbarouses was not selected for the final squad to travel to the Games.

A standout first season with then newly crowned A-League champions Brisbane Roar saw the 21-year-old striker included in the New Zealand squad for a friendly against China in Wuhan on 25 March 2011.

Barbarouses formed part of an 18-man All Whites squad that played Jamaica in an international friendly at Mt Smart Stadium in Auckland, New Zealand, on 29 February 2012.