|Full name||Antón Arieta-Araunabeña Piedra|
|Date of birth||6 January 1946|
|Place of birth||Durango, Spain|
|Height||1.74 m (5 ft 9 in)|
|* Senior club appearances and goals counted for the domestic league only|
Born in Durango, Biscay, Arieta played youth football with local Athletic Bilbao. At the age of 18, he was immediately promoted from Lezama into the first team, scoring a career-best 12 goals in the 1964–65 season to help his team to the seventh position in La Liga.
During his ten-year stint at the San Mamés Stadium, Arieta appeared in 358 games across all competitions, netting 83 times. He won two Copa del Rey trophies with his main club, scoring in the 1972–73 edition, won 2–0 against CD Castellón.
- "2–0: No tuvo rival serio en el Castellón" [2–0: Castellón was no serious match]. Mundo Deportivo (in Spanish). 30 June 1973. Retrieved 15 February 2016.
- "2–0: Volviendo por sus fueros España venció a Alemania" [2–0: Back on track Spain beat Germany]. Mundo Deportivo (in Spanish). 12 February 1970. Retrieved 22 March 2016.
- "Falleció Eneko Arieta" [Eneko Arieta died]. Diario AS (in Spanish). 29 December 2004. Retrieved 22 March 2016.