Marc P. Christensen is an American engineer and academic who served as the 17th president of Clarkson University in Potsdam, New York.

He began his professional career as a technical leader in BDM's Sensors and Photonics Group, now part of Northrop Grumman Mission Systems.

[5] In 1997, he co-founded Applied Photonics, an optical interconnection company that provided hardware demonstrations for multiple DARPA programs.

[8] In 2010, he was selected as the inaugural Bobby B. Lyle Professor of Engineering Innovation.

[10] Christensen is a leader in photonics research and technology development and holds 10 U.S.