Abstract: A field experiment was carried out to investigate the effect of level of pruning on the yield and yield contributing characters of rice cv. BR11 (Mukta) under eight years old Sissoo (Dalbergia sissoo) tree in Boalmari Upazilla of Faridpur district, Bangladesh during the period from July to November, 2003. The level of pruning of Sissoo trees were designed as severely, moderately, medium and light pruned. Out of four tree-rice associations, severely pruned tree produced significantly highest yield (3.63 t ha-1) and lowest yield (2.70 t ha-1) was produced by light pruned tree, while control (out side the tree canopy) produced the highest yield as compared to all orientations. As regard to orientations, south orientation (OS) produced the highest yield (3.86 t ha-1) and north orientation (ON) produced the lowest yield (3.20 t ha-1) compared to that of control. Therefore, for tree-rice Agroforestry system, tree species having light canopy is suitable since they allow easy penetration of sunlight, while tree of dense canopy required heavy pruning especially in the north-east orientation.