New-style, post-c1993, Bulgarian vehicle registration plates start with a group of one or two letters,
indicating the town of registration:
- B - Varna
- BH - Vidin
- BP - Vratsa
- BT - Veliko-Turnovo
- C - Sofija
- CC - Silistra
- CH - Sliven
- CM - Smolyan
- CO - Sofija region
- CT - Stara Zagora
- E - Blagoevgrad
- EB - Gabrovo
- EH - Pleven
- K - Kurdzhali
- KH - Kyustendil
- P - Ruse
- PA - Pazardzhic
- PB - Plovdiv
- PK - Pernik
- PP - Razgrad
- T - Turgovishte
- TX - Dobrich
Old-style, pre-c1993, Bulgarian vehicle registration plates start with a group of one or two Cyrillic letters,
indicating the town of registration:
- А - Sofia
- Б - Burgas
- Бс - Burgas
- Бл - Blagoevgrad
- Гб - Gabrovo
- Х - Khaskovo
- Хс - Khaskovo
- Кж - Kurdzhali
- Кн - Kyustendil
- Лч - Lovech
- Мх - Mikhailovgrad
- П - Plovdiv
- Пд - Plovdiv
- Пз - Pazardzhic
- Пк - Pernik
- Пл - Pleven
- Р - Ruse
- Рс - Ruse
- Рз - Razgrad
- С - Sofia
- Сф - Sofia
- Сс - Silistra
- Сл - Sliven
- Сж - Smolyan
- СЗ - Stara Zagora
- Ш - Shumen
- Шн - Shumen
- Тх - Tolbukhin
- Тш - Turgovishte
- В - Varna
- Вн - Varna
- Вд - Vidin
- Вр - Vratsa
- ВТ - Veliko-Turnovo
- Яб - Yambol
- Н - ?
- Ов - ?