Día das Letras Galegas –roughly translated to Galician Literature Day– is a regional public holiday in the Spanish autonomous community of Galicia. It typically falls on the 17th of May every year.

In Spain, each community that has been granted its autonomy can declare two idiosyncratic regional holidays aside from the national public holidays. Said regional holidays are generally dedicated to commemorating a prominent regional saint or to paying homage to a historical battle, usually a lost one – it is considered more histrionic to honor a noble defeat than the triumphant subjugation of an enemy.

One of the regional holidays of Galicia is the Feast Day of St. James, which falls on the 25th of July, coinciding with the Day of Galicia. Whereas the other regional holiday is dedicated to acknowledging the language and literature of Galicia.