Operación Triunfo is a Spanish reality television music competition to find new singing talent. The fourth series, also known as Operación Triunfo 2005, was aired on Telecinco then La 1 refused a fourth series, from 30 July 2005 to 13 October 2005, presented by Jesús Vázquez.
Sergio Rivero was the winner of the series.
Headmaster, judges and presenter
- Headmaster: Kike Santander
- Judges: Noemí Galera, Augusto Algueró, Javier Llano and Inma Serrano
- Presenter: Jesús Vázquez
Contestants
Galas
Results summary
- Colour key
References




