Frohnmayer or Frohnmaier is a surname. Notable people with the surname include:
David B. Frohnmayer, 15th president of the University of Oregon John Frohnmayer, retired attorney from the U.S. state of Oregon Mark Frohnmayer, American entrepreneur Markus Frohnmaier, German politician
See also Dave and Lynn Frohnmayer Pedestrian and Bicycle Bridge MarAbel B. Frohnmayer Music Building