|Full name||Wilmer Santiago Acasiete Ariadela|
|Date of birth||22 November 1977|
|Place of birth||Callao, Peru|
|Height||1.82 m (6 ft 0 in)|
|Playing position||Centre back|
|* Senior club appearances and goals counted for the domestic league only
Born in Callao, Acasiete started playing professionally with lowly Deportivo Wanka, moving in the following year to Universitario de Deportes. After another sole season he joined Cienciano del Cuzco, helping the former country's capital side to the 2003 South American Cup and the 2004 South American Supercup.
For 2004–05, Acasiete signed with UD Almería in the Spanish second division. He was an important defensive element in the Andalusians first-ever promotion to La Liga in 2007, being used intermittently in the subsequent seasons however: in his first top level campaign in Spain he appeared in only 20 games, but still managed to award his team six points with last-minute home strikes against Sevilla FC and Villarreal CF (both 1–0).
Following the end of 2011–12, spent again in the second level, 34-year-old Acasiete opted out of his contract with Almería and returned to his former club Cienciano.
On 7 December 2007, he was found guilty of having introduced women and alcohol into the national squad's hotel two days before Peru's away drubbing at the hands of Ecuador (5–1), and was thus suspended 18 months (1.5 years) from international competition (national sides only). On 3 July of the following year, after an investigation and a review of the facts, the suspension was changed to three months (from the date of appeal in April) with a US$10,000 fine.
- Acasiete ya es espãnol (Acasiete is already Spanish) Archived 27 September 2007 at the Wayback Machine.; UD Almería, 9 July 2007 (in Spanish)
- Almeria 1–0 FC Sevilla; ESPN Soccernet, 1 December 2007
- Almeria 1–0 Villarreal; ESPN Soccernet, 13 April 2008
- Pierrend, José Luis (28 May 2009). "Peru – Record International Players". RSSSF. Retrieved 27 January 2010.
- Peru ban Farfán and Pizarro for 18 months; Reuters, 28 March 2008