| Cass Field Station | |
|---|---|
| Cass Mountain Biological Station | |
 Original 1914 building and 1959 extension | |
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| Location | Cass |
| Nearest city | Christchurch |
| Coordinates | 43°02′04″S 171°45′34″E / 43.03444°S 171.75944°E |
| Elevation | 600 m |
| Established | 1914 |
| Owner | University of Canterbury |
Cass Field Station is a biological and geological research facility operated by the University of Canterbury located near the railway settlement of Cass, in the Canterbury high-country of New Zealand. It was founded in 1914 as the Cass Mountain Biological Station and was operated for many years by the university's Department of Botany. A significant body of research generated by the station has tracked biological change in the area for over 100 years.