- Born: May 4, 1956
Arnold Lanni (born Arnold David Lanni, 4 May 1956, in Toronto) is a Canadian record producer, and former member of both Frozen Ghost and Sheriff. He is best-known by many as the man who wrote Sheriff's biggest hit, "When I'm With You."
Lanni has most notably produced the Canadian rock groups, Our Lady Peace, Finger Eleven, The Waking Eyes, Rev and Simple Plan. Lanni has also operated as the producer for the American groups The Gufs and King's X.