Roseneath is a small suburb of the New Zealand city of Dunedin, located on the northwestern shore of Otago Harbour, 12 kilometres (7.5 mi) to the northeast of Dunedin city centre. It is situated between Saint Leonards and Port Chalmers on a rocky promontory of the same name which juts 0.6 kilometres (0.37 mi) into the harbour between Sawyers Bay and Blanket Bay.