Syllabification Τζαν-νής Gender masculine Τζαννής is a Greek variant of Italien name Gianni. Synaxis of Prophet Forerunner and Baptist John Feast day January 7 When is Τζαννής's name day? Τζαννής's Day is celebrated on January 7 in memory of Synaxis of Prophet Forerunner and Baptist John. Transcriptions Tzannis (la) Log in or register to post comments Be the first to rate this name Leave this field blank Copied to clipboard