Glenduan is a small township lying to the north of Nelson, New Zealand. It lies on the shore of Tasman Bay / Te Tai-o-Aorere between the northern end of Boulder Bank and Pepin Island.^[3][4]

The settlement's main park, Glenduan Reserve, is a public beach and local park.^[5]

Horoirangi Marine Reserve is located offshore of Glenduan.^[6]

Glenduan is in an SA1 statistical area which covers 0.13 km² (0.050 sq mi).^[1] It is part of the Nelson Rural statistical area.^[7]

Glenduan had a population of 189 at the 2018 New Zealand census, an increase of 9 people (5.0%) since the 2013 census, and a decrease of 33 people (−14.9%) since the 2006 census. There were 75 households, comprising 90 males and 96 females, giving a sex ratio of 0.94 males per female. The median age was 43.4 years (compared with 37.4 years nationally), with 39 people (20.6%) aged under 15 years, 21 (11.1%) aged 15 to 29, 102 (54.0%) aged 30 to 64, and 27 (14.3%) aged 65 or older.

Ethnicities were 98.4% European/Pākehā, 4.8% Māori, 1.6% Pasifika, and 4.8% other ethnicities. People may identify with more than one ethnicity.

Although some people chose not to answer the census's question about religious affiliation, 63.5% had no religion, 20.6% were Christian, 3.2% were Hindu, 1.6% were Buddhist and 1.6% had other religions.

Of those at least 15 years old, 60 (40.0%) people had a bachelor's or higher degree, and 12 (8.0%) people had no formal qualifications. The median income was $35,100, compared with $31,800 nationally. 30 people (20.0%) earned over $70,000 compared to 17.2% nationally. The employment status of those at least 15 was that 69 (46.0%) people were employed full-time, 39 (26.0%) were part-time, and 3 (2.0%) were unemployed.^[2]