Ernesto Alexis Vega Rojas (born 25 November 1997) is a Mexican professional footballer who plays as a forward or winger for Liga MX club Toluca and the Mexico national team.

Vega made his senior team debut on 27 February 2016 coming on as a substitute in a home league match against Pachuca.

[9] Vega was called up by Jaime Lozano to participate at the 2020 CONCACAF Olympic Qualifying Championship, scoring one goal in five appearances, where Mexico won the competition.

[13] Vega made his senior national team debut on 26 March 2019, under Gerardo Martino in a friendly against Paraguay, as a 78th-minute substitute for Javier Hernández.

[18] In October 2022, Vega was named in Mexico's preliminary 31-man squad for the 2022 FIFA World Cup, and in November, he was ultimately included in the final 26-man roster.