Leonard King "Len" Lesser (December 3, 1922 – February 16, 2011) was an American actor. He was known for a key role in the Clint Eastwood movie Kelly's Heroes and his recurring role as Uncle Leo in Seinfeld, which began during the show's second season in "The Pony Remark" episode. Lesser was also known for his role as Garvin on Everybody Loves Raymond.