The Sugar Loaf Islands (often Sugarloaf; Māori: Ngā Motu, lit. 'the islands') are a collection of five small uninhabited islands and several sea stacks near Port Taranaki, in New Plymouth, New Zealand.

The largest, Moturoa Island, covers approximately 1.4 hectares (3.5 acres). Motumahanga is the island farthest from shore, at approximately 1.5 kilometres (0.93 miles).

Ngā Motu was one of the first areas inhabited by descendants of Te Whiti o Rongomai, and the islands and reefs were all named by the Ngāti Te Whiti iwi. The island group was given its English name in 1770 by James Cook because they reminded him of the way sugar was stored in heaps in Europe.

The Sugar Loaf Islands Marine Protected Area (SLIMPA) was established in 1991 to protect the area from oil exploration. This strengthened the protection that had been in place since the formation of a marine park in 1986.

In 2013 New Plymouth District Council unanimously agreed to gift the protected area back to the government for treaty settlement negotiations with Taranaki and Te Āti Awa iwi.

The Sugar Loaf Islands can be divided into inner and outer island groups.

The inner islands comprise Mataora (Round Rock), Pararaki (Seagull Rock) and Motuotamatea (Snapper Rock). Mataora connects to the mainland at low tides as a tombolo, as does Motuotamatea on very low spring tides. Pararaki is separated from Mataora by a 20 meter wide channel.

The outer islands comprise Motumahanga (Saddleback Island) and Moturoa.