United States:
* James Madison: President of the United States during the war.
* Thomas Jefferson: Former president and advisor to Madison.
* Henry Clay: Speaker of the House of Representatives and a leading advocate for the war.
* John C. Calhoun: Secretary of War during the war.
United Kingdom:
* George III: King of the United Kingdom during the war.
* Spencer Perceval: Prime Minister of the United Kingdom until his assassination in 1812.
* Robert Jenkinson, 2nd Earl of Liverpool: Prime Minister of the United Kingdom after Perceval's death.
* Richard Wellesley, 1st Marquess Wellesley: Foreign Secretary of the United Kingdom during the war.
These are just a few of the many political leaders who played a role in the War of 1812. The war was a complex and multifaceted conflict, and there were many different factors that contributed to its outbreak and resolution.