Cliffside Apartments, Heritage-listed apartment block in Kangaroo Point, Brisbane, Australia

Cliffside Apartments is a five-storey masonry building at 76 Lower River Terrace, Kangaroo Point, built into a porphyry cliff above the Brisbane River. It holds eight flats, each with its own private entrance, and its stepped form follows the slope so that no flat is more than one and a half flights of stairs from the street.

The building was constructed between 1936 and 1937 under the direction of architect R. Martin Wilson. It showcases how residential design evolved during the interwar period in Australia.

Doris Regina Booth bought the cliff site in the early 1930s and had Cliffside built in 1936–37, naming it after the house of her childhood beside the Kangaroo Point railway gates. She had won a 1933 New Guinea court case confirming married women's property rights, and later sat on the first Legislative Council of Papua and New Guinea in 1951–57.

The building sits by the river and is easily reached on foot via Lower River Terrace. The clifftop location offers good views and clear orientation for visitors exploring the area.

The building was cleverly built into the slope to minimize the need for stairs and improve access. Inside, dedicated laundry chutes made everyday life more practical for residents.