Loranthus spp., commonly known as mistletoes, are the predominant groups of angiospermic shoot parasites, and are found in a wide range of vegetative zone. They cause more economic loss than members of any other parasitic family of angiosperm. The effects of parasites on hosts are manifolds like reduction of vigour and growth rate, poor fruit and seed production; drying of tops; predisposition to other pests and diseases, and ultimately causing premature death. The motivation of such studies in urban environment is the perception of the need to understand the possible impacts that Loranthus spp. could cause on native and mostly on alien species. Therefore, in the present investigation the incidence and intensity of mistletoe infestation on host tree species and their distribution on Rajshahi Metropolitan City, Bangladesh was described.