Field experiment was conducted at Agricultural Research Station, Devihosur in black clayey soil under rainfed condition during 2004-05 and 2005-06. The treatments comprised of two chilli genotypes (cv. Byadagi kaddi and Hy. 9646) with Jayadhar cotton as mixed crop (main plot) and six intercrops viz., soybean, french bean, coriander (vegetable), coriander (seeds), garlic and onion (sub-plot). High yielding chilli genotype Hy. 9646 recorded 1013 kg per ha dry chilli yield accounting for 37.4 per cent increase over chilli cv. Byadagi (737.0 kg/ha). The chilli genotype Hy. 9646 recorded significantly higher total dry matter production at 30 (4.21 g/plant), 60 (39.71 g/plant), 90 (116.47 g/plant) and 120 (161.31 g/plant) DAT. Intercropping of coriander (vegetable) with chilli + cotton recorded significantly higher dry chilli yield (1122 kg/ha). Intercropping coriander (vegetable) recorded significantly higher kapas yield (580 kg/ha). Kapas yield per ha and total DMP per plant at 150 DAS of cotton was influenced by interaction effects of growing different intercrops with chilli (cv. Byadagi) + cotton or with chilli (Hy. 9646) + cotton. The higher total DMP and yield of chilli and cotton were due to higher LA, LAI, LAD, AGR, RGR, NAR and CGR. Growing chilli genotype cv. Byadagi with chilli + cotton recorded significantly higher chilli equivalent yield (cv. Byadagi) of 2189 kg per ha. Intercropping garlic with chilli + cotton system recorded significantly higher chilli equivalent yield (cv. Byadagi) of 3216 kg per ha. Intercropping garlic with chilli (cv. Byadagi) + cotton recorded highest chilli equivalent yield (cv. Byadagi) of 3257 kg per ha.