| Name | Description | Type | Package | Framework |
| AxisType | Type-safe enumeration of netCDF Coordinate Axis types. | Class | ucar.nc2.constants | NetCDF |
| CDM | Interface | ucar.nc2.constants | NetCDF | |
| CF | Constants used in CF Conventions. | Interface | ucar.nc2.constants | NetCDF |
| CF .CellMethods | Class | ucar.nc2.constants | NetCDF | |
| CF .FeatureType | Map from CF feature type names to our FeatureType enums. | Class | ucar.nc2.constants | NetCDF |
| _Coordinate | Constants for _Coordinate Conventions. | Class | ucar.nc2.constants | NetCDF |