| Isla Bank | |
| Coordinates: | -46.2078°N 168.1285°W |
| Population Density Km2: | auto |
| Subdivision Type: | Country |
| Subdivision Name: | New Zealand |
| Subdivision Type1: | Region |
| Subdivision Name1: | Southland |
| Subdivision Type2: | District |
| Subdivision Name2: | Southland District |
| Subdivision Type3: | Ward |
| Subdivision Name3: | Waiau Aparima[1] |
| Leader Title: | Territorial Authority |
| Leader Name: | Southland District Council |
| Leader Title2: | Regional council |
| Leader Name2: | Southland Regional Council |
Isla Bank is a rural community in the Southland District and Southland Region of New Zealand, on the Winton riding and Aparima riding.
It is part of Southland District Council's Waiau Aparima Ward.[2]
European settlers arrived in the area in the 19th century. By 1905, the area, which included the Limestone Plains and the main settlement of Calcium, had a population of 294.[3]
Isla Bank School was a state contributing primary school for years 1 to 8, which operated in the area from 1899 to 2018.