Ngākuta Bay is a settlement and bay in the Marlborough Sounds, New Zealand. The bay is part of Grove Arm in Queen Charlotte Sound / Tōtaranui. Picton is about 11 km to the southeast via Queen Charlotte Drive. The bay was given its official name of Ngākuta Bay on 27 May 2021^[3] and it has been known as Ngakuta Bay since at least 1865.^[4]

Ngākuta is a combination of the Te Reo Māori words ngā,^[5] meaning plural "the", and kuta,^[6] a name for the tall spike sedge Eleocharis sphacelata. Together ngākuta means "the tall spike sedges".

Ngākuta Bay is described by Statistics New Zealand as a rural settlement. It covers 0.31 km² (0.12 sq mi)^[1] and had an estimated population of 60 as of June 2023,^[2] with a population density of 194 people per km². It is part of the larger Marlborough Sounds East statistical area.^[7]

Ngākuta Bay had a population of 57 at the 2018 New Zealand census, a decrease of 6 people (−9.5%) since the 2013 census, and a decrease of 3 people (−5.0%) since the 2006 census. There were 33 households, comprising 24 males and 33 females, giving a sex ratio of 0.73 males per female. The median age was 68.0 years (compared with 37.4 years nationally), with 3 people (5.3%) aged under 15 years, 6 (10.5%) aged 15 to 29, 15 (26.3%) aged 30 to 64, and 33 (57.9%) aged 65 or older.

Ethnicities were 94.7% European/Pākehā, 5.3% Māori, 0.0% Pasifika, 0.0% Asian, and 0.0% other ethnicities. People may identify with more than one ethnicity.

Although some people chose not to answer the census's question about religious affiliation, 47.4% had no religion, 42.1% were Christian and 0.0% had other religions.

Of those at least 15 years old, 12 (22.2%) people had a bachelor's or higher degree, and 9 (16.7%) people had no formal qualifications. The median income was $26,700, compared with $31,800 nationally. 9 people (16.7%) earned over $70,000 compared to 17.2% nationally. The employment status of those at least 15 was that 15 (27.8%) people were employed full-time, 9 (16.7%) were part-time, and 0 (0.0%) were unemployed.^[8]