- Yaccarine
- Yager
- Yagi
- Yamada
- Yamaguchi
- Yamaichi
- Yamamoto
- Yamane
- Yamanouchi
- Yamashiro
- Yamauchi
- Yanari
- Yanez
- Yang
- Yanger
- Yap
- Yapo
- Yasukawa
- Yasutake
- Yaung
- Ybarra
- Yea
- Yeap
- Yee
- Yeh
- Yep
- Yeung
- Yi
- Yip
- Yoder
- Yohe
- Yona
- Yoon
- York
- Yoshioka
- Yoshizuka
- Yost
- You
- Young
- Youngren
- Youngs
- Youngworth
- Youssef
- Yuan
- Yuen
- Yunus