Álvaro Mejía Castrillón (born January 19, 1967) is a former Colombian professional road racing cyclist. Known primarily as a strong climber, Mejía was one of the most prominent Colombian riders of the late 1980s and 1990s, particularly recognized for his performances in the Grand Tours.
Mejía turned professional in 1989 and spent the early part of his career with Colombian-sponsored teams like Postobón and Ryalcao-Manzana Postobón. He gained significant international recognition for his consistent performances in multi-stage races.
His most notable achievements include:
- 1993 Tour de France: Mejía achieved his career-best Grand Tour result by finishing third overall. This podium finish solidified his status as one of Colombia's top cyclists.
- 1991 Tour de France: He won the white jersey for the best young rider, showcasing his potential early in his career.
- Vuelta a España: Mejía consistently performed well in the Spanish Grand Tour, finishing 6th overall in 1990 and 7th overall in 1991.
- 1991 Critérium du Dauphiné Libéré: He finished second overall and secured a stage victory in this prestigious preparation race for the Tour de France.
- 1993 Vuelta a Murcia: He won the overall classification in this Spanish stage race.
Mejía also rode for the international team Motorola from 1993 to 1996, where he continued to compete at the highest level of professional cycling. He retired from professional racing in 1998.