Falange Auténtica (English: Authentic Phalanx, FA) is a Falangist political party in Spain. FA emerged in 2002 as a split from FE/La Falange. FA claims to represent the heritage of the dissolved Falange Española de las JONS (Auténtica) (FE-JONS).

The term 'Authentic' refers to the positioning of FA as 'authentic' as opposed to the official Falange under the rule of Francisco Franco. The second National Chief of the Spanish Falange, Manuel Hedilla (1902–1970), had opposed the forced merger of FE-JONS with the traditionalists. Hedilla who had refused to join the council of the new party and had tried to mobilize his supporters was arrested on 25 April 1937, accused of conspiring against Franco, and condemned to death. However, his sentence was commuted to life in prison on the advice of Ramón Serrano Suñer, Franco's brother-in-law.

FA contested the 2003 municipal election in various parts of the country. It won two seats in El Hoyo de Pinares, Ávila, and one in Ardales, Málaga.