Defunct New Force (Spanish: Fuerza Nueva, FN) was the name of a far-right political party in Spain founded by Blas Piñar, director of the Institute of Hispanic Culture and longtime procurador in the Cortes Españolas during the Francoist period.

During the first years of the transition to democracy, FN's members were involved in supporting and perpetrating a number of terrorist incidents and murders against striking workers, left-wing politicians, trade unionists, journalists, and student organizations.

The majority of parliamentary interventions by Piñar were centred on issues of post-transition Spain, denouncing topics such as separatism, abortion, and economic mismanagement.

[citation needed] A number of leaders of later nationalist parties passed through FN's youth organization, Fuerza Joven ("Young Force"), including José Luis Corral (leader of Movimiento Católico Español), Rafael López-Diéguez (general secretary of Spanish Alternative), and Ricardo Sáenz de Ynestrillas Pérez (of the Alliance for National Unity coalition).

Featured authors included Francoist Prime Minister Luis Carrero Blanco and Belgian politician and Nazi collaborator Léon Degrelle.