Juan Alejandro Hernández Serrano (more commonly known as Alex Hernández (born 23 June 1999) is a Mexican tennis player. Hernández has a career high ATP singles ranking of World No. 462 achieved on 15 August 2022. He also has a career high ATP doubles ranking of World No. 555 achieved on 27 May 2019. He is currently the No. 1 Mexican player.