Gender masculine Ευμένης is a modern form of Greek name Ευμένιος.Feasts and saints related to given name Ευμένης St Eumène le Thaumaturge, Evêque de Gortyne en Crète Feast day September 18 When is Ευμένης's name day? Ευμένης's Day is celebrated on September 18 in memory of St Eumène le Thaumaturge. Transcriptions Evmenis (la) Log in or register to post comments Be the first to rate this name Leave this field blank