Abstract: An experiment was conducted at the student research farms of the University of Arid Agriculture, Rawalpindi during 1999-2000 to find out the preference of Pieris brassicae (Linnaeus) (the cabbage butterfly (CBF)) on different Brassica genotypes. (Cyclone, SPS-5, CON-III, CCS-01 Oscar, CON-II and K.S-75). It was inferred that CBF showed the highest preference to Brassica genotype cyclone and the lowest to CON-II. It was also concluded that CBF showed variations in preferring hosts of different varieties of Brassica spp. and this information could be helpful in evolving varieties of Brassica resistant against this serious pest of cruciferous plants.