• Bilateral military relations of Bulgaria (5 C)
• Bilateral sports relations of Bulgaria (8 C)

A

• Afghanistan–Bulgaria relations (1 C)
• Albania–Bulgaria relations (1 C, 7 P)
• Argentina–Bulgaria relations (1 C)
• Armenia–Bulgaria relations (2 P)
• Australia–Bulgaria relations (3 P)
• Austria–Bulgaria relations (1 C, 2 P)
• Azerbaijan–Bulgaria relations (1 C, 1 P)

B

• Bangladesh–Bulgaria relations (1 C, 1 P)
• Belarus–Bulgaria relations (1 C)
• Belgium–Bulgaria relations (1 C, 1 P)
• Bosnia and Herzegovina–Bulgaria relations (1 C)
• Brazil–Bulgaria relations (2 C, 1 P)

C

• Bulgaria–Canada relations (2 C, 2 P)
• Bulgaria–Chile relations (2 C)
• Bulgaria–China relations (2 C, 1 P)
• Bulgaria–Croatia relations (1 C, 1 P)
• Bulgaria–Czechoslovakia relations (1 C, 2 P)

E

• Bulgaria–East Germany relations (1 C)
• Bulgaria–Estonia relations (1 C, 1 P)
• Bulgaria–Ethiopia relations (1 C)

F

• Bulgaria–Finland relations (3 C)
• Bulgaria–France relations (3 C, 6 P)

G

• Bulgaria–Georgia (country) relations (1 C, 1 P)
• Bulgaria–Germany relations (5 C, 8 P)
• Bulgaria–Ghana relations (1 C)
• Bulgaria–Greece relations (14 C, 14 P)

H

• Bulgaria–Holy See relations (2 C, 1 P)
• Bulgaria–Hungary relations (3 C, 2 P)

I

• Bulgaria–India relations (2 C, 1 P)
• Bulgaria–Indonesia relations (1 C, 1 P)
• Bulgaria–Iraq relations (1 C, 1 P)
• Bulgaria–Israel relations (4 C, 3 P)
• Bulgaria–Italy relations (4 C, 2 P)

J

• Bulgaria–Japan relations (3 C, 3 P)

L

• Bulgaria–Luxembourg relations (1 C)

M

• Bulgaria–Moldova relations (2 C)
• Bulgaria–Mongolia relations (2 C, 1 P)
• Bulgaria–Montenegro relations (2 C, 1 P)
• Bulgaria–Morocco relations (1 C)

N

• Bulgaria–Netherlands relations (2 C, 2 P)
• Bulgaria–North Korea relations (1 C)
• Bulgaria–North Macedonia relations (2 C, 10 P)
• Bulgaria–Norway relations (1 C, 1 P)

O

• Bulgaria–Ottoman Empire relations (4 C, 5 P)

P

• Bulgaria–Pakistan relations (1 C)
• Bulgaria–Peru relations (1 C, 2 P)
• Bulgaria–Poland relations (1 C, 3 P)

R

• Bulgaria–Romania relations (6 C, 14 P)
• Bulgaria–Russia relations (3 C, 6 P)

S

• Bulgaria–Serbia relations (7 C, 15 P)
• Bulgaria–Singapore relations (1 C)
• Bulgaria–Slovakia relations (3 C, 2 P)
• Bulgaria–South Africa relations (1 C, 1 P)
• Bulgaria–South Korea relations (1 C, 2 P)
• Bulgaria–Soviet Union relations (3 C, 39 P)
• Bulgaria–Spain relations (2 C, 1 P)
• Bulgaria–Sri Lanka relations (1 C)
• Bulgaria–Sweden relations (1 C)
• Bulgaria–Switzerland relations (1 C, 2 P)

T

• Bulgaria–Turkey relations (7 C, 10 P)
• Bulgaria–Turkmenistan relations (1 C)

U

• Bulgaria–Ukraine relations (3 C, 4 P)
• Bulgaria–United Kingdom relations (4 C, 4 P)
• Bulgaria–United States relations (6 C, 8 P)

Y

• Bulgaria–Yugoslavia relations (4 C, 17 P)

A

• Albania–Bulgaria relations
• List of ambassadors of Albania to Bulgaria
• Armenia–Bulgaria relations
• Australia–Bulgaria relations
• Austria–Bulgaria relations
• Azerbaijan–Bulgaria relations

B

• Bangladesh–Bulgaria relations
• Brazil–Bulgaria relations
• Bulgaria–Israel relations
• Bulgaria–Uruguay relations
• Bulgaria–Iran relations

C

• Bulgaria–Canada relations
• Bulgaria–China relations
• Bulgaria–Croatia relations
• Bulgaria–Cyprus relations
• Bulgaria–Czech Republic relations

D

• Bulgaria–Denmark relations

E

• Bulgaria–Egypt relations
• Bulgaria–Estonia relations

F

• Bulgaria–France relations

G

• Bulgaria–Georgia relations
• Bulgaria–Germany relations
• Bulgaria–Greece relations

H

• Bulgaria–Holy See relations
• Bulgaria–Hungary relations

I

• Bulgaria–India relations
• Bulgaria–Indonesia relations
• Bulgaria–Iraq relations
• Bulgaria–Italy relations

J

• Bulgaria–Japan relations

K

• Bulgaria–South Korea relations
• Bulgaria–Kosovo relations

L

• Bulgaria–Latvia relations
• Bulgaria–Lithuania relations

M

• Bulgaria–Mexico relations
• Bulgaria–Mongolia relations
• Bulgaria–Montenegro relations

N

• Bulgaria–Netherlands relations
• Bulgaria–North Macedonia relations

P

• Bulgaria–Palestine relations
• Bulgaria–Poland relations
• Bulgaria–Portugal relations

R

• Bulgaria–Romania relations
• Bulgaria–Russia relations

S

• Bulgaria–Serbia relations
• Bulgaria–Slovakia relations
• Bulgaria–Slovenia relations
• Bulgaria–South Africa relations
• Bulgaria–Spain relations
• Bulgaria–Sudan relations
• Bulgaria–Syria relations

T

• Bulgaria–Turkey relations

U

• Bulgaria–United Kingdom relations
• Bulgaria–United States relations
• Bulgaria–Uzbekistan relations

V

• Bulgaria–Vietnam relations

Y

• Bulgaria–Yugoslavia relations