The main aim of this article is to assess the crop diversification in different districts of Bangladesh. As there are some variations in topology and rainfall across regions, crop diversification index is computed for 23 old districts. The trend in diversification between 1980/81 and 2002/03 is analysed to see changing pattern over the years. Spatial analysis is also made to examine variations in diversification across regions, using time series data on acreage under different crops.