St. George's Caye Day is a national holiday in the Central American nation of Belize, celebrated annually on September 10. The day marks the Battle of St. George's Caye, a key moment in the nation's history. In this 1798 battle, the Baymen militia, a group of British woodcutters, defeated the Spanish invaders to establish British hegemony over the territory, which eventually culminated in the formation of Belize.

The day is celebrated with much fervor and enthusiasm throughout Belize. Festivities begin several days in advance and include a series of activities such as parades, concerts, and reenactments of the historic battle. The citizens proudly display the national flag, and express their patriotism by participating in various events and activities. This lively commemoration plays an essential role in strengthening the nation's sense of identity and unity.

An important highlight of the St. George's Caye Day celebration is the crowning of the Queen of the Bay, a tradition that dates back to 1946. This beauty pageant involves young ladies from across the country who compete for the honor of being the national queen for an entire year. Additionally, the holiday serves as a reminder of Belize's struggle for independence and the sacrifices made by their ancestors to achieve sovereignty.