In 1979, invited by Luciano Francalanci for the Italy section, he received the "Faber Castell Prize" at the first International Drawing Triennial at the Kunsthalle in Nuremberg. His works were shown at the Biennale of Venice in 1982, 1984 and 1986, in the São Paulo Biennials in Brazil and in Paris,[3][bettersourceneeded] in contemporary art museums in Japan and at the Bradford Biennial 7th British International Print (1982).
In 2018, Galliani donated one of his self-portraits to the Uffizi Gallery in Florence.[5] The work was exhibited at the Vasari Auditorium and presented to the public by the director, Eike Schmidt, before becoming part of the collection.[6]
In January 2019, the documentary A Matita? Omar Galliani, was produced and directed by Fulvio Wetzl.[7]
