RVI (Radar Vegetation Index) has shown some promise in the vegetation fields, but its relationship withMVI (Multispectral Vegetation Index) is not known in the context of various land covers. Presented herein isa comparative analysis of the MVI values derived from the LANDSAT-8 and RVI values originating from theRADARSAT-2 quad-polarimetric SAR (Synthetic Aperture Radar) data. Among the various multispectralvegetation indices, NDVI (Normalized Difference Vegetation Index) and SAVI (Soil Adjusted Vegetation Index)were used for comparison with RVI. Four land covers (urban, forest, water, and paddy field) were compared, andthe patterns were investigated. The experiment results demonstrated that the RVI patterns of the four land coversare very similar to those of NDVI and SAVI. Thus, during bad weather conditions and at night, the RVI datacould serve as an alternative to the MVI data in various application fields.