Herbert Monroe Allison, Jr. (August 2, 1943 – July 14, 2013) was an American businessman who oversaw the Troubled Asset Relief Program (TARP) as Assistant Secretary of the Treasury for Financial Stability from 2009 to 2010. 

His previous positions included president and CEO of Fannie Mae, a post to which he was appointed in September 2008, after Fannie was placed into conservatorship. Prior to that, Allison was chairman, president and chief executive officer of TIAA from 2002 until his retirement in 2008.

Upon completion of naval service in 1969, Allison received his M.B.A. from the Stanford University Graduate School of Business in 1971.