The abundance of predatory hemipterans within 4 crops-soybean, Clycine max (L.); corn, Zea mays L.: tomato, Lycopersicum esculentum Miller; and tobacco, Nicotiana tabacum L-was studied in small plots its 1992 and 1993. Predatory hemipteran populations varied among the crops despite the close proximity of the various crops. No predatory hemipteran was commonly observed in >2 crops, and nabids were associated with only 1. Three nabid species-Nabis roseipennis Reuter, Nabis amerucoferus Carayon, and Nabis urufusculus Reuter-were associated with soybean; only small numbers were found on the other crops. The anthocorid Orius insidiosus (Say) was abundant on soybean early in the season and became more abundant on corn as the season progressed. Ceocoris punctipes (Say) was common in soybeans and tobacco, although nymphs were more abundant on soybean, Jalysus wickhami (Say) was found on tomatoes and tobacco and only rarely on the other crops. Predatory hemipterans from different families exhibited differences in crop associations. Implications of crop associations by predatory hemipterans are discussed.