Aphids are one of the major pests attacking cultivation in the city of Tulkarm. Chemical control often failed to reduce their numbers to a non damaging levels. In order to convert to organic production; we should know more about these pests and their naturally occurring antagonist; which is very essential in the integrated pest management programs. A field survey was carried out in Tulkarm, in 2009 and 2010; on aphid species attacking vegetative crops and orchards. Thirty species of different natural enemies were recorded; fourteen Coccinellidae, two Anthocoridae and one Miridae, three Syrphidae, one species of each of Chrysopidae, Chamaemyiidae, and red soldier beetle. In addition to six parasitoid species and one entomopathogenic fungi. Results are also presented by host aphids and by their host plant species.