Tiradentes Day is a national holiday in Brazil, celebrated annually on April 21. It commemorates the death of Joaquim José da Silva Xavier, popularly known as 'Tiradentes', an important figure in Brazil's early struggle for independence from Portuguese colonial rule. Translated 'tooth puller,' Tiradentes was a dentist amongst other professions, but he is best remembered as a revolutionary martyr.

The holiday is marked with parades, concerts, and special exhibits throughout the country. In the week leading up to April 21, numerous cultural events take place in Tiradentes's honor, especially in Minas Gerais, the state where he was born. Schools and official institutions often use the holiday as an opportunity to educate about the history of Brazil and Tiradentes's role in its path to independence.

Tiradentes Day is also marked by political rallies and protests, resulting from its symbology as a day to stand against oppression and tyranny. It's considered one of the notable official public holidays in Brazil, and all public institutions, schools, and most businesses are closed on this day. Even though it's steeped with rich historic significance, the holiday also provides Brazilians with a day off work to spend with friends and family.