YBS may mean:
- Yale Bright Star catalogue
- Yamanashi Broadcasting System (株式会社山梨放送 Kabushiki-gaisha Yamanashi Hōsō?)
- Yangon Bus Service, a governmental bus transport system in Yangon, Myanmar, which started its service on 16 Jan 2017.
- YBS, a disco artist who had the hit song "Happy Birthday" in 1979, see List of disco artists (S-Z)
- Yellow-bellied slider, a land and water turtle belonging to the family Emydidae.
- Yonsei Educational Broadcasting System (연세교육방송국)
- Yorkshire Building Society, the 2nd largest building society in the UK
- Yukon Bureau of Statistics
- Sinjar Resistance Units (YBŞ)
disambiguation page lists articles associated with the title YBS.
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