Flag Day (disambiguation)

Flag Day is a day to fly a flag of a certain area or a day set aside to honor an event specifically involving a national flag.

Flag Day may also refer to:

National days

 * Flag Day (Albania)
 * Flag Day (Argentina)
 * Flag Day (Australia)
 * National Flag of Canada Day
 * Armed Forces Flag Day, celebrated in India
 * Flag Day (Mexico)
 * Day of the National Flag (Russia)
 * Day of the National Flag (Ukraine)
 * Flag Day (United Arab Emirates)
 * Flag Day (United States)

Other uses

 * Flag day (computing), a large change
 * Flag Day (film), a 2021 film by Sean Penn
 * Flag Day (Hong Kong), a day for charity fundraising - also practised in Singapore
 * "Flag Day" (song), a song by The Housemartins