Gilbert Castellanos (born 1972) is an American jazz trumpeter, bandleader, educator, composer, and arranger based in San Diego, California. He was born in Guadalajara, Mexico. He is a former member of the Black Note, the Tom Scott Quintet, the Anthony Wilson Nonet, the Charles McPherson Quintet, and the Willie Jones III Quintet. He is a current member of the Clayton-Hamilton Jazz Orchestra.