Operación Triunfo (transl. 'Operation Triumph') is a reality television talent show which first aired on Spain's TVE network in 2001. A music talent contest with viewer voting and reality show elements that originated Endemol's Star Academy franchise, the show aims to find the country's next solo singing sensation.

Operación Triunfo (also known as OT) first aired in 2001. On its first run between 2001 and 2004, three series were aired on TVE, which also served as the national final to select the Spanish entry for the Eurovision Song Contest. The first series of OT was particularly successful in ratings, becoming one of the most popular shows in the history of Spanish television and featuring singers that went on to enjoy long-term recognition from the public: notably Rosa López, David Bisbal, David Bustamante or Chenoa. After the third series, TVE decided not to renew the show and its rights were acquired by Telecinco, which aired series 5–8 of the series. Series 8 in 2011 was cancelled due to poor ratings and its finale was rushed as a result.

On 26 April 2017, RTVE approved a new series of the talent show produced by Gestmusic Endemol, returning to TVE after 13 years. The total cost of the series was €10.2 million. Due to its ratings success, it was renewed for a further series. This was the second most successful edition of the program to date, artists like Aitana, Ana Guerra, Amaia, Alfred García, Luis Cepeda, Agoney, Miriam Rodríguez or Lola Índigo have emerged from this edition.

In 2023, Amazon Prime Video acquired the rights to air the twelfth series. Shortly after the conclusion of this series, it was announced that Amazon had picked up the show for a thirteenth season. It is scheduled to premiere in September 2025.