As 'Official Betting Partner', Betfair will create sports betting content through FC Barcelona's official club website, while its branding will also be visible across multiple channels, including perimeter boards at the club's home ground, Camp Nou.
Other rights available to Betfair includie tickets, hospitality and training ground access. it will also target FC Barcelona members with offers and promotions.
The deal was handled by sponsorship consultancy Synergy.
Betfair has also launched betfairfootball.com to support its portfolio of football partnerships, which inlucdes Manchester United.