Álvaro Mejía Florez (15 May 1940 – 12 January 2021) was a long-distance runner from Colombia, who became a national hero after competing in the 1964 Tokyo Olympic Games 5,000 meter.

In 1971, the 75th edition of the Boston Marathon had one of the closest finishes ever, as Mejía dueled almost the entire way with Pat McMahon, a native of Ireland and local Massachusetts resident.

Mejía was married to Terri Stickles, the American bronze medalist in the 400 meter freestyle swim in the 1964 Tokyo Olympic Games.

Several Colombian runners followed Mejía to train in Northern California and compete alongside Mejia for WVTC, including Víctor Mora, who placed second in the 1972 Boston Marathon.

Mejía coached Colombian athletes including Alirio Carrasco, of Bogotá, who ran 2:12:09 at the Chicago Marathon in 2003.