The 29-year-old left-back joined the Baggies in a £250,000 deal from Watford in 2003. The deal also includes a one-year option.

Robinson has made 200 appearances for West Brom, scoring four goals.

The defender, who was in the final year of his current deal, has been promoted twice to the Premier League with Albion in 2004 and at the end of last season.

He is the club's second longest serving player after team-mate Neil Clement.