|Full name||Luis Alberto Islas Ranieri|
|Date of birth||22 December 1965|
|Place of birth||Buenos Aires, Argentina|
|Height||1.92 m (6 ft 4 in)|
|1989–1990||→ Logroñés (loan)||35||(0)|
|1995||Newell's Old Boys||15||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 17 January 2007.
Luis Alberto Islas Ranieri (born 22 December 1965 in Buenos Aires, Argentina) is an Argentine former football goalkeeper. He played for the Argentina national team, Independiente, Estudiantes de La Plata and León.
Islas started his career as a goalkeeper in Chacarita Juniors in the early 1980s. He earned his nickname el loco ("crazy") because of his flair and temperament.
He was transferred to Independiente in 1986 and played for two years. He then went to Atlético Madrid in 1988 but did not play a game and was loanded to CD Logroñés. He came back to Independiente in 1990 and helped the team win the Clausura 1994 and two international titles.
He retired in 2003 after playing 241 games for Independiente.
Islas was the substitute goalkeeper during the 1986 World Cup, which Argentina won. Angry that he was still a substitute for Nery Pumpido, he resigned the national team just before the 1990 World Cup. Ironically, Pumpido was injured in the second match during that cup, so third goalkeeper Sergio Goycochea was put to the fore, and was selected the best goalkeeper of the tournament. After the cup, Islas returned to the national team under new coach Alfio Basile. Because Goycochea had some weak matches during the qualifiers to the 1994 World Cup, Islas was the starting goalkeeper for Argentina during the 1994 World Cup. But his performance was not very positive, since he conceded 6 goals in four matches, including the three goals Romania scored to eliminate Argentina in the second round.
|Argentina national team|
- Argentine Primera División (1): Clausura 1994
- Supercopa Sudamericana (1): 1994
- Recopa Sudamericana (1): 1995