after-party NCLRA Alma Awards Kathy Griffin Gloria Estefan

Kathy Griffin stepped out with a new guy at the ALMA awards in Santa Monica on Saturday night ... but who is he?

While Kath kept mum on her dude's identity, she was happy to hold his hand as the couple made their way through the crowd.

Kathy met up with old pal Gloria Estefan and her husband. See a pic of the foursome after the jump!