Matías Nicolás Rojas Romero (born 3 November 1995) is a Paraguayan professional footballer who plays as an attacking midfielder for Argentine Primera División club River Plate.

[2] A year later, Rojas netted his first senior goal on 13 March 2015 as Cerro Porteño beat Deportivo Capiatá 3–2 at the Estadio Defensores del Chaco.

[2] Rojas arrived back to Cerro Porteño on 30 June 2018, but returned to Argentina on loan weeks later after agreeing to join fellow Argentine Primera División side Defensa y Justicia.

[2] Rojas departed Cerro Porteño permanently in June 2019, staying in Argentina after signing terms with Racing Club of the Primera División.

On 2 March 2019, Rojas received a call-up to the Paraguay national team from Eduardo Berizzo ahead of that month's friendlies with Peru and Mexico.