Mel Gibson's Mystery Woman -- An 'Alphas' Female

TMZ has learned the identity of the woman Mel Gibson was spotted kissing last week ... she's "Alphas" star Azita Ghanizada, a rep for the actress tells TMZ.

Ghanizada's rep says it was NOT a date.

As TMZ first reported, the two met for dinner at the L'Ermitage Hotel in Beverly Hills.

Azita Ghanizada Fun Facts -- she's 31, was born in Afghanistan, and is fluent in Dari.