The 27-year-old has joined the Gunners on a season-long laon.
Arsenal boss Arsene Wenger said of the loan signing: “Viviano is a player that we have rated for some time and we are very pleased to have signed him on loan.
“He’s experienced and has proved himself at a high level, and provides us with excellent cover to our existing goalkeepers.”
Viviano spent last season on loan at Fiorentina.