| Guest Name | Information | Last Appearance |
|---|---|---|
| Michael Mauldin | Founder, Lycos.com | |
| Peter Max | Famed Pop Artist, Peter Max | |
| Eve Mayer Orsburn | Founder and CEO, Social Media Delivered | May 29, 2012 |
| David McCormick | Chairman, President, Founder, Recycled Mobility Products | September 23, 2011 |
| Richard McCullough | Vice President of Research, Carnegie Mellon University | June 23, 2011 |
| Ann McElhinney | Filmmaker, Frack Nation | March 2, 2012 |
| Seamus McGraw | Author | March 30, 2012 |
| Michael McGuire | Research Vice President, Gartner's Media Industry Advisory Services | January 6, 2012 |
| Jim McIngvale | CEO, Gallery Furniture | |
| Janet McKee | Founder, Janet M. McKee HHC, AADP | June 16, 2012 |
| Regis McKenna | Founder, Regis McKenna, Inc. | June 16, 2012 |
| Mary McKinney | Director, Duquesne University Small Business Development Center | April 28, 2012 |
| Rick McLaughlin | Pennsylvania Commercial Real Estate Management Gro | June 23, 2011 |
| Justin Meltzer | Co-Founder, Airtime For Email | May 12, 2012 |
| Daryl Metcalfe | Pennsylvania State Representative | July 21, 2011 |
| John Metzger | Associate Professor, Department of Mechanical Engineering, Swanson School of Engineering - University of Pittsburgh | October 25, 2012 |
| Fred Meyers | CEO, Queensboro Shirt Company | November 19, 2011 |
| Matt Mickiewicz | Founder & CEO, 99 Designs | September 2, 2010 |
| Marlin Mickle | Professor of Electrical EngineeringUniversity of Pittsburgh - Swanson School of Engineering | August 5, 2011 |
| Beth Milito | Senior Executive Counsel, NFIB | April 19, 2012 |
| Alden Mills | Founder, The Perfect Push-Up | August 27, 2010 |
| Ralph Minto | AttorneyMinto Law Group | May 21, 2012 |
| Henry Mintzberg | Cleghorn Professor of Management Studies - McGill, McGill University (Montreal) | March 12, 2012 |
| Greg Minuskin | Craftsman, Greg Minuskin Nib Re-Tipping and Fountain Pen Repair | March 13, 2012 |
| Dr. Ivan Misner | Founder/Renowned Networking Pioneer, BNI | |
| Barbara Mistick | President & Director, Carnegie Library of Pittsburgh | July 6, 2010 |
| Nick Montano | Vice President/Managing Editor, Vending Times | April 2, 2012 |
| Geoffrey Moore | Author, Crossing the Chasm | September 6, 2010 |
| Kent Moors | Professor - Political Science Department, Duquesne University | March 8, 2012 |
| Gretchen Morgenson | Journalist, New York Times | November 19, 2011 |
| Peter Morici | Noted Economist, University of Maryland | August 8, 2011 |
| Michael Morisi | CEO, PeopleExpress | February 18, 2012 |
| Faith Morrison | Accountant, Wilke & Associates, LLP | April 9, 2012 |
| Dale Moser | CEO, MegaBus | January 20, 2012 |
| Michael Moyer | Chief Operating Officer, Environmental Service Laboratories | August 5, 2011 |
| Brandon Mueller | PartnerSeubert and Associates | |
| Jeffrey Mullen | Founder & CEO, Dynamics Inc. | July 20, 2011 |
| Matt Mullenweg | Founder & CEO, WordPress | April 13, 2012 |
| Mark Murphy | Founder and CEO, Leadership IQ | June 11, 2012 |
| Dan Murphy | Veteran Beef Industry Journailst | June 2, 2012 |
| David Murray | Author & Business Consultant, Plan B: How to Hatch a Second Plan that’s Always B | April 9, 2012 |
| Millie Myers | Professor / Business Communication Consultant, Carnegie Mellon University | March 29, 2012 |
| George Naddaff | Founder & CEO, Boston Market | May 12, 2011 |
| Robert Nay | Founder, Nay Games | March 23, 2010 |
| David Neeleman | Founder & CEO, Jet Blue Airlines | |
| Dave Nelsen | President, Dialog Consulting Group | May 25, 2012 |
| Doug Nelson | Professor, Seton Hill University | October 22, 2011 |
| Jack Nerad | Publisher, Kelly Blue Book | February 6, 2010 |
| Ryan Neupaver | Financial AdvisorSelect Financial Group, LLC | April 14, 2012 |
| Sonny Newman | Founder/President, EE Technologies | January 24, 2012 |