Giovanni Antonio Galli, also called lo Spadarino (baptized January 16, 1585 – after June 1651),

• Was an Italian Baroque artist.
• He was a member of the Caravaggisti (followers of Michelangelo Merisi da Caravaggio).
• He was born in Rome.
• He is known to have been working in Rome in 1597.
• In 1616 he worked on the decoration of the Sala Regia in the Palazzo del Quirinale with Carlo Saraceni.

• Elisabetta Giffi Ponzi says that Galli's later works, such as the Palazzo Madama frescoes, show a stylistic decline resulting from his ambivalence toward new trends in Roman art.