This study investigated whether there are any differences among four professional groups-physicians, dentists, attorneys, and accountants--regarding professional advertising; their differential use of various advedsing media; and investigation of some segmentation variables. Based on a sample of Wisconsin professionals this study found several interesting results: (1) accountants are the most favorably disposed to advertising among the four professional groups, (2) younger practitioners and those in practice a few years have more favorable attitudes toward professional advertising than others, and (3) printed media is preferred to other media. Several managerial recommendations were made for professionals who want to communicate their practices through advertising.Ronald Marks is Professor and Soo-Young Moon is Associate Rofessor of Marketing, University of Wisconsin~hkosh, Oshkosh, WI 54901. This project is funded by a grant from the College of Business Adminishation, University of