San Francisco Giants -- Zoo Names Good Luck Monkey After ...

San Francisco Giants fans got their wish ... the "good luck" monkey -- whose birth coincided with a string of Giants victories -- WILL be named after one of the World Series winning players, and TMZ has learned who gets the honor.

A rep for the SF Zoo tells TMZ, the red-haired Francois' langur monkey will forever be named Romo -- after Giants' closing pitcher Sergio Romo ... who struck out Detroit Tigers' Miguel Cabrera to clinch the WS Sunday night.

Romo (the monkey) rose to fame during the NLCS -- when the Giants went on a 3-game winning streak right after its birth.

Fans claimed Romo's miraculous birth was responsible for the Giants' wins -- and demanded the zoo name the "Lucky Langur" after a current Giants player.

The zoo's rep says they settled on the name because the monkey shares Sergio's "playful spirit."