GJB
| Acronym | Definition |
|---|---|
| GJB | Gap Junction Protein |
| GJB | George Jackson Brigade |
| GJB | Genuine Junk Band (band) |
| GJB | Gerakan Jogja Bangkit (Indonesian: Jogja Movement Rising; Jogja, Indonesia) |
| GJB | German Jail Brothers (gaming clan) |
| GJB | George Janouris Band (band) |