Gruppo T was an Italian art collective, active from 1959 to 1964. It was founded in Milan in 1959 by Giovanni Anceschi, Davide Boriani, Gianni Colombo, and Gabriele Devecchi, later joined by Grazia Varisco in 1960. The group was central to the development on kinetic, interactive, and participatory art, of light as artistic medium, and of Programmed Art (Arte Programmata).