Otto Piene (born 18 April 1928) is a German artist.
He was a Visiting Professor at the University of Pennsylvania beginning in 1964. From 1968 to 1971, he was the first Fellow of the MIT Center for Advanced Visual Studies (CAVS), founded by Gyorgy Kepes. In 1972, he became a Professor of Environmental Art at MIT. In 1974 he succeeded Kepes as director of the CAVS, in which position he served until 1994.
The University of Maryland, Baltimore County awarded Piene an honorary Doctor of Fine Arts in 1994. In 1996, he received the Sculpture Prize of the American Academy of Arts and Letters, New York. Piene lives and works today in Groton, Massachusetts and Düsseldorf.
Otto Piene continues the practice of "smoke pictures" through today. Fire and smoke (their traces) are important elements in these pictures. He experimented also with multimedia combinations. In 1963, together with Günther Uecker and Heinz Mack, he became spokesman of Neuen Idealismus ("the new idealism"). Piene is also noted for exploring new uses for broadcast television. In 1968, along with Aldo Tambellini, he produced Black Gate Cologne, which is cited as one of the first television programs produced by experimental visual artists.
In addition, Piene arranged the German pavilion for the 1967 and 1971 Venice Biennales. In 1985, he exhibited at the São Paulo Biennial. For the closing of the 1972 Summer Olympics in Munich, Piene created the sky work Olympic Rainbow.