Syllabification Θέ-μη Gender feminine Male form Θέμης Θέμη is a short form of Greek name Ευθυμία. Saint Euthymius the Great Feast day January 20 When is Θέμη's name day? Θέμη's Day is celebrated on January 20 in memory of Saint Euthymius the Great. Transcriptions Themi (la) Log in or register to post comments Be the first to rate this name Leave this field blank