LYB
| Acronym | Definition |
|---|---|
| LYB | LyondellBasell (est. 2007; Netherlands) |
| LYB | Love You Bunches |
| LYB | Live Your Best |
| LYB | Little Yellow Bus |
| LYB | Love Your Body |
| LYB | Look Your Best (plastic surgery forum) |
| LYB | Love You Babe |
| LYB | Love You Bye |
| LYB | Luv Your Beach (San Clemente, CA) |
| LYB | Les Yeux Brass (brass ensemble in Toronto, Ontario, Canada) |
| LYB | Laguna Youth Baseball (Elk Grove, CA) |