Arnaldo Pomodoro was born on June 23, 1926, in Morciano, Romagna, Italy. He moved to Rimini in 1937, where he studied on at technical institute. From the mid-1940s until 1957 he served as a consultant for the restoration of public buildings in Pesaro, while studying at the Art Institute of the city, with a specific interest in stage design, and working as a goldsmith. In 1954 Pomodoro moved to Milan, where he met Enrico Baj, Sergio Dangelo, Lucio Fontana, and other artists. His work was first exhibited that year at the Galleria Numero in Florence and at the Galleria Montenapoleone in Milan. In 1955 his sculpture was shown for the first time at the Galleria del Naviglio in Milan.

He participated together with his brother Giò at the Venice Biennale in 1956, and traveled to Paris, where in 1959 he met Alberto Giacometti. Pomodoro went to the United States for the first time in 1959. Here he organized exhibitions of contemporary Italian art at the Bolles Gallery in New York and San Francisco. In New York the following year Pomodoro met Louise Nevelson and David Smith. He helped found the Continuità group in Italy in 1961–62. The sculptor made his first ‘sfera’ in 1963, and in the same year he was awarded the International Sculpture Prize at the São Paulo Bienal. A solo show of his work was included in the Venice Biennale of 1964. In 1965 he was given the first of many solo exhibitions at the Marlborough galleries in New York and Rome.

The artist taught at Stanford University in California in 1966. In 1967 Pomodoro was represented in the Italian Pavilion at Expo ’67 in Montreal, and he received a prize at the Carnegie International in Pittsburgh. In 1968 he taught at the University of California at Berkeley; in 1970 he returned to Berkeley to attend the opening of an exhibition of his work that originated there and later traveled in the United States. In 1974 a Pomodoro retrospective was sponsored by the Municipality of Milan at the Rotonda della Besana. Since 1990 he is the director of the TAM, a school for specialization in sculpture, jewellery and design. Pomodoro’s sculptures was exhibited in the royal palace garden in Caserta in 2000, and his sculpture Novecento, a huge spiral tower, was erected in Rome in 2004. The artist lives and works in Milano.