Álvaro Arby Arbeloa Coca (born 17 January 1983) is a Spanish football player currently playing for Real Madrid and the Spanish national team. He is predominantly a right back, although he can play as a central defender, and he started most of his early games in the 2007–08 season as a left back.

Arbeloa trained with Real Madrid as a youth player, and worked his way up to the first team, making his debut in the 2004–05 season. However, he mostly played for the Real Madrid B team. He moved to Deportivo La Coruña to play first team football in La Liga in 2006, but moved to Liverpool after half a season. He cemented his place in the Liverpool first team and played in the 2007 UEFA Champions League Final, although the team lost to Milan. Arbeloa made 93 appearances in his three seasons at the club. He returned to Madrid in 2009 for a fee of €4 million.

Internationally, he made his senior debut in 2008 and has played for Spain at UEFA Euro 2008 and the 2009 FIFA Confederations Cup, winning the former tournament.