Anaís Alexandra Álvarez Portilla (born 4 July 2007) is a Chilean footballer who plays as a midfielder for Colo-Colo and the Chile women's national team.

She scored her first goal at professional level against Cobresal [es] in the first matchday of the national championship.

[3] At international level, she became the youngest player to make her debut in the 2023 Copa Libertadores Femenina after entering in the 4–0 win against Libertad-Limpeño [es].

[9] At senior level, she made her debut in a 3–0 win against New Zealand on 23 September 2023 in Santiago, Chile.

[10] She was included in the Chile squad for the 2023 Pan American Games after Javiera Grez injured.