Antoni Gutiérrez Díaz (1929–2006) was a Catalan physician and communist politician who held various posts.

[3] Gutiérrez received a degree in medicine in Barcelona in 1953 and had further training in neonatology in Finland.

[6] He left the PSUC in 1986 and involved in the establishment of a new political party entitled Initiative for Catalonia Greens.

[7] From the 1950s Gutiérrez was one of the supporters of the Italian Communist Party which promoted a new version of communism not Stalinism in line with the Gramsci's view.

[5][8] After leaving PSUC he adopted an eco-socialist view becoming a member of the Initiative for Catalonia Greens.

[5] During a visit in Santiago de Compostela Gutiérrez was admitted to a hospital due to heart failure on 29 September 2006.