Barton Peninsula () is a small peninsula separating Marian Cove and Potter Cove at the southwest end of King George Island, in the South Shetland Islands. It was named by the UK Antarctic Place-Names Committee in 1963 for Colin M. Barton, Falkland Islands Dependencies Survey geologist who worked in this part of King George Island, 1959-61.
South Korea's King Sejong Station is located here.