Javier Rosas Sierra (born September 25, 1974, in Guadalajara) is a male athlete from Mexico.

He competes in the triathlon.

Rosas competed at the second Olympic triathlon at the 2004 Summer Olympics.

He placed forty-fourth with a total time of 2:04:03.97.

This biographical article related to a Mexican known for competing in triathlons is a stub.