Nicolette Andrea "Nicki" Hernández Sippel (born 17 February 1999) is a professional footballer who plays as a left-back for Liga MX Femenil side Club América.

[5] Originally a forward, Hernández became a key player for América after manager Ángel Villacampa switched her to play as a left-back.

[6] Hernández was at one point part of the United States women's national team youth program during her early teens.

[6] She was called to the Mexico women's national football team for the first time on 18 November 2021 for a pair of friendly matches against Canada, but was unable to attend.

[7] Hernández was called once more to the Mexico national team by manager Pedro López on 3 October 2022 to replace Joseline Montoya (Injury) for a friendly match against Chile.