César Octavio "Tavo" Álvarez (born November 25, 1971) is a Mexican former Major League Baseball pitcher. He played during two seasons at the major league level, pitching for the Montreal Expos. He attended high school at Tucson High School in Tucson, Arizona. His senior year, he was one of 25 high school baseball players in USA Today's "Super 25" for the 1990 season. He was also named the Arizona Gatorade Player of the Year for baseball in 1990. After his senior season, he was drafted by the Montreal Expos in the second round of the 1990 Major League Baseball Draft, and he signed with the team on June 19.