The History Day Theme changes each year.  

Here is a list of themes by year.

Current Theme (2018): Conflict and Compromise in History 

Future Themes (Subject to Change)

2019: Triumph and Tragedy in History

2020: 

PAST HISTORY DAY THEMES

2017 - Taking a Stand in History

2016 - Exploration, Encounter, Exchange in History

2015 - Leadership and Legacy in History

2014 - Rights and Responsibilities in History

2013 - Turning Points in History: People, Ideas, Events

2012 - Revolution, Reaction, Reform in History

2011 - Debate and Diplomacy in History: Successes, Failures, Consequences

2010 - Innovation in History: Impact and Change

2009 - The Individual in History: Actions and Legacies

2008 - Conflict and Compromise in History

2007 - Triumph and Tragedy in History

2006 - Taking a Stand in History

2005 - Communication in History: The Key to Understanding

2004 - Exploration, Encounter, Exchange in History

2003 - Rights and Responsibilities in History

2002 - Revolution, Reaction, Reform in History

2001 - Frontiers in History

2000 - Turning Points in History

And more past themes from National History Day