Heroes' Day or National Heroes' Day may refer to a number of commemorations of national heroes in different countries and territories. It is often held on the birthday of a national hero or heroine, or the anniversary of their great deeds that made them heroes.

National Heroes' Day in Angola is a holiday in Angola on 17 September, the birthday of the national hero Agostinho Neto.

National Heroes' Day in the Bahamas has been a public holiday since 2013. It replaced Discovery Day, which celebrated the arrival of Christopher Columbus to the Americas.

National Heroes' Day is a public holiday in Barbados on April 28, honoring the eleven national heroes of Barbados. It was first celebrated on 28 April 1998, the centenary of the birth of national hero Grantley Adams, after the passing of the Order of National Heroes Act 1998.

National Heroes' Day has been an official holiday in Bermuda since 2008, when the centre-left government declared it would replace the Queen's Official Birthday marked in June. Over 2,000 residents signed a petition in protest calling to retain the Queen's Birthday holiday.

Initially observed in October, the holiday was moved to the third Monday of June in 2009.

Currently Bermuda has eight (8) National Heroes, voting is open to the public once every decade as of June 2022, with the next nomination period beginning in 2025.

Heroes Day is a public holiday in Cape Verde on 20 January. It commemorates the 1973 assassination of Amílcar Cabral, who is remembered as a hero for fighting western colonialism and exploitation.