Indice voci "y" Yahya Khan, Agha MuhammadYasodharmanYazid IYemenYezdegèrd IIIYom Kippur, guerra delloYoshida ShigeruYoshihitoYoung, OwenYpsilanti, AlexandrosYpsilanti, DemetriosYuan ShikaiYunnanYuramoto Mimamoto