Founder's Day

Founder's Day, Founders Day, or Founders' Day and variations may refer to:
 * Founder's Day, a holiday of the American Revolution
 * Founders Day, an observance and former public holiday in South Africa
 * Founders' Day, a former public holiday in Rhodesia
 * Founder's Day, a television episode, see List of The Vampire Diaries episodes
 * Founders' Days, a scouting holiday associated with Scouts' Day
 * Founder's Day, a public holiday in Ghana celebrated the founding fathers of Ghana