Máximo Etchecopar (19 February 1912 – 20 March 2002) was an Argentine diplomat, writer and early adherent of the nationalist strain in the country's political and intellectual elite.

[2] He wrote for such journals as Sol y Luna and Nueva Politica in defence of oligarchy and in praise of Juan Manuel de Rosas.

[2] In 1942 he was a leading delegate at the Congresa de la Recuperación Nacional at Buenos Aires, a failed attempt to unite the various strands of nationalist thought in the country.

[2] Following the failure of this initiative Etchecopar became a close ally of Mario Amadeo and under his influence became a supporter of Arturo Frondizi, moving away from nationalism.

[1] He subsequently acted as Argentina's ambassador to Sweden, Peru, Mexico, Colombia and Switzerland whilst also serving as director of the main training centre for diplomats, the Instituto del Servicio Exterior de la Nación, from 1966 to 1969.