Diego Martín Alonso López (born 16 April 1975) is an Uruguayan retired footballer who played as a striker, and the current manager of Pachuca of Liga MX.
Alonso was born in Montevideo, the country's capital. He made his professional debuts with C.A. Bella Vista where he remained four seasons, helping the club to the second division title in 1997.
After a brief spell in Argentina for Club de Gimnasia y Esgrima La Plata (he would also represent the side towards the end of his career, from 2007 to 2009), Alonso moved to Spain, where he played with five teams in as many years: Valencia CF, Atlético de Madrid (where he scored 22 goals in 2001–02's second division, helping the Colchoneros return to La Liga, and forming an efficient offensive partnership with countryman Fernando Correa, who added 13), Racing de Santander, Málaga CF and Real Murcia, where he did not have a good scoring record overall. In between his fourth and fifth club, he played one year in Mexico, with UNAM Pumas.
In 2006, 31-year-old Alonso returned to his country, joining hometown giants Club Nacional de Football. However, shortly after, he moved abroad again, signing with Chinese outfit Shanghai Shenhua FC; after two slow seasons with Gimnasia, the veteran switched to Club Atlético Peñarol.
Alonso made eight appearances for the Uruguay national team, during five years. His debut came on 17 June 1999 in a 3–2 friendly win over Paraguay, in Ciudad del Este.
He was chosen for the nation's squad for that year's Copa América, and scored on his quarterfinal penalty shootout attempt (5–3 win) for the eventual runners-up, also against Paraguay, the hosts.
- Bella Vista
- Atlético Madrid
Alonso is cousin-brother to Iván Alonso, who also played several years in Spain, namely with Deportivo Alavés.