Antonio Valentín Alzamendi Casas (born 7 June 1956) is a Uruguayan former footballer who played as a forward.

Antonio Alzamendi

Alzamendi (centre) with José Enrique Peña and Alfonso Domínguez after winning 1987 Copa América.
Personal information
Full name	Antonio Alzamendi Casas
Date of birth	(1956-06-07) 7 June 1956 (age 67)
Place of birth	Durazno, Uruguay
Height	1.75 m (5 ft 9 in)
Position(s)	Second striker
Senior career*
Years	Team	Apps	(Gls)
1971–1973	Wanderers de Durazno
1974–1976	Policial de Durazno
1977–1978	Sud América	31	(14)
1978–1982	Independiente	185	(75)
1982–1983	River Plate
1983	Nacional	17	(5)
1983–1984	Tecos UAG	17	(2)
1985	Peñarol	28	(13)
1986–1988	River Plate	77	(30)
1988–1990	Logroñés	62	(15)
1990/'91	Deportivo Mandiyú	9	(0)
1993	Rampla Juniors	4	(1)
International career
1978–1990	Uruguay	32	(6)
Medal record Representing  Uruguay Copa América Winner 1987 Argentina Runner-up 1989 Brazil
*Club domestic league appearances and goals

His official debut was with the Uruguayan team Wanderers de Durazno. Alzamendi played for Uruguay at the 1986 and 1990 FIFA World Cups, scoring against West Germany in 1986. He played several years for River Plate of Argentina, winning both the Copa Libertadores de América and Intercontinental Cup in 1986. On Intercontinental Cup final, Alzamendi was named as man of the match and got the only goal of the game in the 28th minute when he headed into the net after his initial shot had hit the post and then came back off the goalkeeper.^[1] That year he was also named South American Footballer of the Year.

In July 2001 he was appointed as coach of the Australian National Soccer League team Canberra Cosmos. However his contract was then terminated shortly after due to financial problems with the club.

In 2008, he became the coach of Sport Ancash from Peru.