Remembrance day of the Latvian legionnaires (Latvian: Leģionāru piemiņas diena), often known simply as Legionnaire Day (Leģionāru diena) or March 16 (16. marts) in Latvia, is a day on March 16, when soldiers of the Latvian Legion, part of the Waffen-SS, are commemorated.
Legionærernes mindedag (lettisk: Leģionāru piemiņas diena) er en uofficiel mindedag i Letland og afholdes hvert år den 16. marts, hvor lettiske soldater fra den såkaldte Lettiske Legion mindes, en del af Waffen SS.