Guglielmo Pizzirani (1886–1971) was an Italian painter and teacher, belonging to the modernist group Gruppo Moderno Italiano (Modern Italian Group), and active in Bologna, Italy.

Pizzirani attended the Fine Arts Institute of Bologna, and was taught by renowned Italian artists Gorini and Ferri, also collaborating in the restoration and decoration of important city monuments.

In 1920 Pizzirani began participating in the Biennale di Venezia, as well as organising his first personal exhibition at the "Francesco Francia" Society.

[1] In 1965, Pizzirani received the Gold Medal and the Certificate of Merit for Culture and the Arts, from the Italian Ministry of Public Education[2] and several prizes from the Province of Bologna.

Pizzirani died in 1971, but even after his death, many of his paintings were exhibited at various posthumous personales and are currently on show at important galleries and museums.