- Ancestry.co.uk Surname Board -Y - Free Database for thousands of surnames
- Yancey (1)
- Yeowell - provides information on the surname. Includes family histories and message board.
- Young - features clan information, history, articles, and merchandise.
- Yabsley / Yeabsley - family history from Devon, U.K. to the U.S., Canada, and Australia.
- Yassenoff - ancestoral outlines and information.
- Yang - for all with surname Yang, Yeo, Young, or other tonal derivatives.
- Yazbek - researching the family tree from Bekfaya Lebanon to now.