Belhaven, the Dunbar-based brewer recently taken over by Greene King, has become the Official Beer Partner of the Scottish Golf Union.
The deal is worth over £150,000 over three years with Belhaven also committing to invest in clubs at a local-level. The brewers have sponsored the Scottish Club Handicap since 2001.
Belhaven has recorded 15 years of uninterrupted growth and its Best band is stocked in more than two hundred Scottish golf clubs.
Bill Hughes, managing director for Belhaven's drinks division, said: "Golf clubs have been at the heart of Belhaven Best's growth into one of the most prominent drinks brands in Scotland".
The Scottish Golf Union's commercial manager, Ross Duncan, added: "Securing a new sponsorship deal with Belhaven is a great boost to what has been another successful year on and off the course for the Scottish Golf Union. The Belhaven brand has become synonymous with golfers in Scotland and we are delighted to be launching a new partnership which supports our clubs."