| Fellow, American Chemical Society | Robert J. McMahon |
| JILA Visiting Fellow - NIST, University of Colorado | Robert J. McMahon |
| Helfaer Professor | Robert J. McMahon |
| Fellow, American Association for the Advancement of Science | Robert J. McMahon |
| Vilas Associate, UW-Madison | Robert J. McMahon |
| National Science Foundation Award for Special Creativity | Robert J. McMahon |
| Research Fellow - Alfred P. Sloan Foundation | Robert J. McMahon |
| National Science Foundation Presidential Young Investigator Award | Robert J. McMahon |
| Departmental Teaching Award, University of Wisconsin-Madison | Robert J. McMahon |
| Sigma Xi Scientific Research Society | Robert J. McMahon |
| UCLA Distinguished Scholar | Robert J. McMahon |
| IBM Corporation Graduate Fellow | Robert J. McMahon |
| Winstein Dissertation Award | Robert J. McMahon |
| National Science Foundation Graduate Fellow | Robert J. McMahon |
| Phi Kappa Phi Honor Society | Robert J. McMahon |
| Phi Lambda Upsilon Honorary Chemical Society | Robert J. McMahon |