Syllabification Γιαν-νά-κης Gender masculine Γιαννάκης is a diminutive form of Greek name Γιάννης. Synaxis of Prophet Forerunner and Baptist John Feast day January 7 When is Γιαννάκης's name day? Γιαννάκης's Day is celebrated on January 7 in memory of Synaxis of Prophet Forerunner and Baptist John. Transcriptions Giannakis (la) Log in or register to post comments Be the first to rate this name Leave this field blank Copied to clipboard