Dr. Dre's Super Bowl 2013 Pick -- It's All About RAY LEWIS

He's from California (Compton to be exact) ... but Dr. Dre tells TMZ he's not backing his home state team in the Super Bowl ... 'cause he's a HUGE Ray Lewis fan.

Dre was leaving Boa in Hollywood last night when he told us he'll be supporting the Baltimore Ravens on Feb. 3 when they take on the San Francisco 49ers.

"I'm excited for Ray Lewis," Dre said ... "He's a good guy and I'm a fan of his ... I'm wishing the best for him."