The veteran actor reached the milestone last week (17Jul12) and he marked the occasion with a big bash at Los Angeles' Greystone Manor.
The birthday boy was accompanied by his Welsh girlfriend Hayley Roberts - and he was also joined by friends from the past, including actress Gena Lee Nolin and Jeremy Jackson, who played the son of Hasselhoff's character in Baywatch.
In a series of posts on his Twitter.com page prior to the celebration, the actor wrote, "Celebrating the big 60! Cant wait to see all my baywatch and knight rider friends! On my way to Greystone Manor to party Hoff style see ya there !!! Thanks to all for coming!!"