The purpose of this paper is to give some account of the fossil shark faunas of Oregon. This has been, at best, only introductory to the more than 5,000 specimens now being studied by the author. Many of the genera are listed in Figure 2, but species determinations have not yet been completed. In most instances, more than one species exists for each genus listed. Newly developed localities are continuing to yield more material, and it is hoped that each of the faunas mentioned herein will be treated in full at a later date.