Venanzio Rauzzini (19 December 1746 – 8 April 1810) was an Italian castrato, composer, pianist, singing teacher and concert impresario.
As a boy he was a member of the Sistine Chapel Choir.
He studied with Giuseppe Santarelli in Rome and Nicola Porpora in Naples.
It has been suggested that Rauzzini may not in fact have been a castrato, but rather had an endocrine condition that prevented his voice from breaking, hence his many affairs as he was thought to be "safe".