| Type: | town |
| Glenreagh | |
| State: | nsw |
| Coordinates: | -30.05°N 211°W |
| Pushpin Label Position: | left |
| Lga: | Clarence Valley |
| Postcode: | 2450 |
| Pop: | 562 |
| Stategov: | Clarence |
Glenreagh is a small town in the Clarence Valley in the Northern Rivers region of north-eastern New South Wales, Australia. At the 2021 census, Glenreagh had a population of 562 people.
It is on the North Coast railway line, completed to Glenreagh in 1915. A picturesque branch was opened from Glenreagh to Dorrigo in 1924, but was difficult to maintain due to the steep terrain and high rainfall and it was closed in 1972 after a washaway. The Glenreagh to Ulong section is proposed for reopening as a heritage tourist railway by the Glenreagh Mountain Railway.
Glenreagh Public School was established in 1887. It is a small school with fewer than 100 pupils (as at 2023).