- YB stands for Yellowbook
- YB stands for Yearbook
- YB stands for Young Boys (Swiss sports club)
- YB stands for Yang Berhormat (Malay: The Honorable)
- YB stands for Ytterbium
- YB stands for Young Blood
- YB stands for Young Bull
- YB stands for Yorkshire Bank (UK)
- YB stands for Yottabyte (10 E^24, one septillion bytes)
- YB stands for Yellow Belt (Lean Six Sigma training)
- YB stands for Young Buck (rapper)
- YB stands for Yogi Bear (cartoon character)
- YB stands for You Bet! (UK gameshow)
- YB stands for Your Buddy
- YB stands for Yeah, Baby
- YB stands for Youth Brigade (band)
- YB stands for Prototype Bomber
YB