Borja Valero Iglesias is a Spanish footballer who currently features for the Primera Division club Villarreal. He plays as a midfielder.
Borja is a graduate of the youth academy of Real Madrid and played for Real Madrid Castilla for the 2006-2007 season. He made his senior debut against Écija Balompié, substituting Javi García at the 60-minute mark in a Copa del Rey match on 25 October 2006 and made another appearance in a UEFA Champions League 2006-07 match against Dynamo Kyiv, replacing Miguel Ángel Nieto in the second half.
Borja signed a five-year contract with Real Mallorca in the summer of 2007 and was a regular for his new club in the 2007-2008 season, playing in 35 league matches and scoring 4 goals. He played on loan at Real Mallorca in the 2009-10 campaign, and was signed by Villarreal thereafter.