Alejandro Arribas Garrido (born 1 May 1989) is a Spanish professional footballer who plays for Club Universidad Nacional from Mexico as a central defender.
Born in Madrid, Arribas began his career in the youth ranks of CF Rayo Majadahonda, being signed by neighbouring Rayo Vallecano in 2008. He spent almost two full seasons with the reserves, making his professional debut with CDA Navalcarnero in the second half of 2008–09 and going on to be regularly used in a relegation-ending campaign in Segunda División B.
In 2009–10, Arribas helped Rayo B promote to the third level, moving to the first team shortly after – in Segunda División – and being an automatic first-choice (38 games out of 42) as the latter returned to La Liga after eight years. In the 2011–12 season he started in all of his 34 league appearances as the capital outskirts side narrowly avoided relegation, scoring in a 2–3 home loss against Athletic Bilbao on 28 January 2012.