Born in Tehran in 1924, Vaziri graduated in 1947 from the Fine Arts Academy in Tehran. He then studied in Rome at the Academy of Fine Arts from which he received his diploma in 1958. He returned from Italy in 1964 to become a professor of art at the Faculty of Decorative Arts and Faculty of Fine Arts of Tehran University. In 1960, Vaziri won the first prize at the second Tehran Biennale. His trademark ‘Sand-Paintings’ which were exhibited in Florence, London, Munich and Rome attracted the attention of western critics. In Tehran, Vaziri has held solo shows throughout his career at the Seyhoun Gallery, the Iran American Society and the Barg Gallery. Internationally, he has exhibited in Rome at the Taylor School of Art and the Santoro Gallery. In 1964 he exhibited at the museum of Modern Art in New York. Vaziri has participated in the Venice Biennale (1960, 1962 and 1964). His works can now be found in the permanent collections of the Museum of Modern Art in New York, the Niyavaran Palace in Tehran and in the Tehran Museum of Contemporary Art. Since the 1980s, Vaziri has divided his time between Rome and Tehran.