Gaston-Armand "Guy" Amaudruz (21 December 1920 – 7 September 2018) was a Swiss neo-fascist political philosopher and Holocaust denier.

Initially a supporter of the Swiss fascist movement of Arthur Fonjallaz, he came to wider attention in 1949 when he published Ubu Justicier au Premier Procès de Nuremberg, one of the first works to question the veracity of the Holocaust.

[2] He also became an early member of the Volkspartei der Schweiz but left the party over the issue of South Tyrol (where he was opposed to irredentism).

[1] Conferences were held irregularly, although membership was fluid and Amaudruz devoted much of his time to writing for journals such as Nation Europa.

Bringing together various shades of extremist opinion, the group began to fall out of favour in the mid 1990s as younger activists saw it as an "old men's club".