Mateo Tanlongo (born 12 August 2003) is an Argentine professional footballer who plays as a defensive midfielder for Pafos on loan from Primeira Liga club Sporting CP.

[2] After spending the next ten years in their academy, notably becoming the second youngest reserve debutant, the midfielder was promoted into the first-team by Kily González in mid-2020; having signed his first professional contract in June.

[9] On 1 September 2023, Danish Superliga club Copenhagen announced the signing of Tanlongo on a season-long loan from Sporting CP, with an optional buy-clause.

[10] On 11 January 2024, Tanlongo returned to Portugal by joining Primeira Liga club Rio Ave on loan until the end of the season.

[11][12] On 6 September 2024, Tanlogo joined Cypriot First Division club Pafos on a season-long loan with the option to buy.