Abstract: Fruiting position effects on seedcotton yield were studied on four advance cotton strains and one commercial cultivar developed by CCRI Sakrand. The results demonstrated that the first three positions on sympodial branches were more important than the remaining fruiting positions. The first fruiting position contributed significantly highest percentage of the total seedcotton yield per plant in all the five cultivars ranging from 55.91 to 63.46 % . The second fruiting position ranked second in order and contributed 26.33 to 31.43 % of the total seedcotton yield per plant in all the cultivars. In case of CRIS-9 and CRIS-19, third, fourth and fifth position contributed 10.65 to 7.04%, 3.57 to 3.61 % and 1.38 to 2.05 % of the total seedcotton yield per plant. While in case of CRIS-52, CRIS-133 and CRIS-134, third and fourth fruiting position contributed 8.18 to 9.19 % and 0.93 to 4.64 % respectively of the total seedcotton yield per plant. Collectively the first three positions contributed about 95 to 97 % of the total seedcotton yield per plant in all the cultivars. Thus from the cotton management point of view the first three positions were most important.