Pitbull -- Sues to Jock Block 'Pit Bull' ... the Cocktail

Rapper Pitbull doesn't want his fans getting drunk on the wrong vodka recipe ... so he's suing to stop a booze company from slapping his name on their product.

Pitbull filed a federal lawsuit against E. & J. Winery & New Amsterdam Spirits Company over a vodka recipe they're pushing called "The Pit Bull."

The recipe -- 2 parts New Amsterdam vodka, 1/2 part lime juice, 1/2 part grapefruit juice, 2 parts lemon/lime soda -- might sound delicious ... but in the lawsuit Pitbull claims it's just piggybacking off his name.

The other problem -- the Miami rapper endorses other liquor brands including Voli vodka which also promotes a Pitbull drink.

According to the suit, New Amsterdam's recipe is confusing the marketplace -- plus, Pitbull's name has been trademarked since 2000.

Pitbull is suing for all profits New Amsterdam makes off his name. He also wants "Pit Bull" removed from the company's website.