Robert Butler (1897-1955) was the United States Ambassador to Australia (1946–48) and Cuba (1948–1951). He died of a heart attack on September 15, 1955.^[2][3] Butler was born in St. Paul, Minnesota and his wife was Margaret Porter.^[1][4][5]

During World War II he was active in shipbuilding.^[1] He was the president of Walter Butler Shipbuilders Inc. and Walter Butler Shipbuilding-Duluth which built a number of cargo ships in Duluth, Minnesota and Superior, Wisconsin during the war.^[6]

According to a former aide, Butler had been the focus of an assassination plot during his term as Ambassador to Cuba.^[7]

A large statue of Cuban independence leader Jose Marti inside City Hall in St. Paul, Minnesota, was presented to the city "in appreciation of [Butler's] courageous work in creating a warm feeling between our two countries."