Aaron Rodgers was spotted at an L.A. golf course Thursday with a very attractive blonde -- and we're told it's "Baywatch" actress Kelly Rohrbach.

Just a few weeks after reports surfaced he split with longtime girlfriend Olivia Munn -- the Green Bay Packers quarterback hit up the Westchester Golf Course.

Witnesses tell us Rodgers and Rohrbach appeared to be holding hands and looked flirty -- until they noticed people watching them.