Eudalio Eulises Arriaga Blandón (born 19 September 1975) is a former Colombian football forward.
Born in Turbo, Antioquia, Arriaga began playing professional football with Envigado. He made his league debut under manager Gabriel Jaime Gómez, appearing as a second-half substitute against Deportivo Cali on 23 March 1995. He would score his first league goal against América de Cali on 11 March 1996.
Arriaga played for a number of clubs in Colombia including Junior where he played over 100 games. He has also played in Mexico with Puebla, Barcelona Sporting Club in Ecuador, Danubio of Uruguay and Universidad San Martín of Peru. He is famous for his particular running gait, as one of his legs is shorter than the other, which made several narrators call him "Bamboleo" (wobble).
Arriaga played 14 times for the Colombia national team between 2001 and 2004. In 2001 he was part of the Colombia squad that won their first ever Copa América.