Alejandro “Álex” Cantero Sánchez (born 8 June 2000) is a Spanish professional footballer who plays as a winger for Atlético Levante.
A youth product of Brunete and Real Madrid CF, Cantero joined the youth academy of Levante in 2016. He signed a professional contract with Levante on 19 February 2019, for four years. He began his senior career as a stalwart with Levante’s reserve side, Atlético Levante, in the Segunda División B. He made his senior debut with Levante in a 2–0 La Liga loss to Celta Vigo on 30 April 2021.
Cantera represented the Spain U19s in 2019 for a pair of friendlies.