Mark Lionel Gertler (born March 31, 1951) is an American economist, and Henry and Lucy Moses Professor of Economics at New York University (NYU).

A specialist in business cycles and monetary policy, he has been an associate and collaborator of Federal Reserve Chairman Ben Bernanke for more than 30 years.

Gertler and Bernanke published "Should Central Banks Respond to Movements in Asset Prices?"

in the American Economic Review in 2001, five years before Bernanke replaced Alan Greenspan as Chairman of the Federal Reserve Board of Governors.

Bernanke and Gertler argue that the practice of targeting inflation and price stability, as the Federal Reserve has done since the 1980s, should be continued, while the more aggressive approach of managing "asset price bubbles", which some economists have advocated, would be ineffective or counterproductive.