Jarah Mariano is an American fashion model. Mariano has appeared in MAC cosmetics ads, been featured in ads from Armani Exchange, Sephora, Abercrombie & Fitch, Victoria's Secret, and Rock and Republic. Mariano is in Jay-Z's "Show Me What You Got" come back video. She also appears in a several Old Navy commercials. She was the subject of Weber's lens for Abercrombie & Fitch and L'uomo Vogue.

Mariano was the cover for the April/May 2007 anniversary issue of Complex magazine and is in the 2008 Sports Illustrated Swimsuit Edition. She is represented by model agency IMG. Mariano is of Hawaiian, Korean, and Chinese descent and lives in New York City with her puppy named Slayer.