Javier Álvarez Fuentes (born May 8, 1956 in Mexico City) is a Mexican composer who is known for creating works that combine a variety of international musical styles and traditions, and that often utilize unusual instruments and new music technologies. Álvarez is one of the best-known Mexican composers of his generation, and many of the works in his prolific oeuvre combine music technology with diverse instruments and influences from all around the world.