Giovanni Giacomo Semenza (18 July 1580 – 1638) was an Italian painter of the early Baroque period.
Born in Bologna and also known as Giacomo Sementi.
He was a pupil of the painter Denis Calvaert, then of Guido Reni.
He painted a Christ the Redeemer for the church of St. Catherine in Bologna.
This article about an Italian painter born in the 16th century is a stub.