J. David Markham (born 26 December 1945) is an educator, and historian who specializes in Napoleonic studies.

Markham has taught history and other subjects at the university, college and high school levels.

He has organized International Napoleonic Congresses in Alessandria, Italy, June 1998, Tel Aviv, Israel, July 1999; Tbilisi, Republic of Georgia June 2000; Dinard, France, July 2005; Slupsk, Poland, 2007; Israel, 2007; Corsica/Elba, 2008; Montreal, Canada 2009; San Anton, Malta, 2010, Den Helder, The Netherlands, 2011, Moscow, Russia, 2012, Toronto, Canada, 2013, Havana, Cuba, 2014, Brussels, Belgium, 2015, Dublin, Ireland, 2016, Trier, Germany, 2017, Vienna, Austria, 2018 and Grenoble, France, 2019.

Future Congresses are planned for Warsaw, Athens, Cork and Acre.

He has been appointed as Councilor for the English-speaking countries for The Mexico-France Napoleonic-Institute, contributing to the success of the international historic and literary contest Count of Las Cases Memorial Prize, an award that he won in 2007.