Graciela Gutiérrez Marx (La Plata, 1942), sculptor and experimental artist, is a pioneer of the Latin American neo-avant-garde, beginning her work in the 60s linked to action art, postal art and various cultural movements in the fluxus line of anti-art. She studied at the Higher School of Fine Arts in her hometown, from which she graduated in sculpture, and was also a professor at said university until 1976. A year earlier she was already integrated into the international mail art circuit, participating since then in more than 400 national and international exhibitions, and getting involved in collective projects around co-creation experiences. Thus, between 1976 and 1982 she worked with Edgardo Antonio Vigo, also from La Plata, fusing ideas and images, producing works under the signature G. E. Marx-Vigo.

During those years she participated with the Malamada Earth Company in performances, collective actions and installations. In 1984 she promoted the Latin American and Caribbean Association of Mail Artists, and that same year she founded the newspaper Hoje-Hoja-Hoy, a critical voice against the Argentine dictatorship.

In 2010 she published her doctoral thesis: Mail art, invisible artists in the postal network.