- Y ... Yaguana
- Yah Mo B There ... Yale romanization system
- Yale School ... Yamato Takeru
- Yamato Takeru No Mikoto ... Yang Yang
- Yang Yang (A) ... Yao language
- Yao language ... Yasawa Group
- Yasaʿ ibn Midrār ... yazata
- Yazd ... Yeats, Jack Butler
- Yeats, John Butler ... yellow flavine
- yellow flax ... yellow-fronted tinkerbird
- yellow-glazed ware ... Yendys, Sydney
- Yengema ... Yesügei
- Yesuj ... Yiftaḥ
- Yifter the Shifter ... Yn y lhyvyr hwnn
- Ynglinga Saga ... Yom River
- Yŏm Sangsŏp ... York, Statute of
- York, Susannah ... You Can’t Go Home Again
- You Can’t Hurry Love ... Young Justice
- Young Kemalists ... Young, Owen D.
- Young, Paul Thomas ... Ypacaraí, Lake
- YPFB ... yuanxiao
- Yuanye ... Yuhuang
- Yuhuang Shangdi ... Yunnanozoon lividum
- Yunost ... Yzerman, Steve