Arlan Lerio was a boxer who competed in the men's flyweight event at the 2000 Summer Olympics. He defeated Jackson Asiku of Uganda in the first round before losing to Andrzej Rżany of Poland in the second round. Lerio was part of the national training pool of the Amateur Boxing Association of the Philippines as early as 1997 and won gold medals in international tournaments in England, Estonia, and Finland.

Following his achievement of winning a gold medal in the Liverpool International Festival of Amateur Boxing in 1991, he was taken in as part of a boxing team by then-North Cotabato Governor Manny Piñol where his father Danilo Lerio Sr. served as coach of the team. Lerio has a younger brother named Danilo who also competed in the 2000 Summer Olympics.

2000 Summer Olympics, Sydney