Lake Chapman is a small lake located on The Flatiron, at Granite Harbour within the Ross Dependency of Antarctica. It was first visited by members of Capt. Robert Falcon Scott's Western Party in 1911 and was one of the "pretty little tarns" observed by Griffith Taylor who was Senior Geologist to the expedition. Indeed, Tryggve Gran, another member of the Western Party, even used the lake for a swim to "celebrate Midsummer Day". More recently, it has been a site of active research undertaken by the University of Waikato as part of a larger terrestrial biodiversity research programme supported by the New Zealand Antarctic Research Institute (NZARI) and Antarctica New Zealand (AntNZ).