Flag

Name

Joining date

1

Islamic State of AFGHANISTAN

1969

2

Republic of ALBANIA

1992

3

People’s Democratic Republic of ALGERIA

1969

4

Republic of AZERBAIJAN

1992

5

Kingdom of  BAHRAIN

1972

6

People’s Republic of BANGLADESH

1974

7

Republic of BENIN

1983

8

BRUNEI-DARUSSALAM

1984

9

BURKINA-FASO (then Upper Volta)

1974

10

Republic of CAMEROON

1974

11

Republic of CHAD

1969

12

Federal Islamic Republic of COMOROS

1976

13

Republic of DJIBOUTI

1978

14

Arab Republic of EGYPT

1969

15

Republic of GABON

1974

16

Republic of The GAMBIA

1974

17

Republic of GUINEA

1969

18

Republic of  GUINEA-BISSAU

1974

19

Republic of  GUYANA

1998

20

Republic of INDONESIA

1969

21

Islamic Republic of IRAN

1969

22

Republic of IRAQ

1975

23

Hashemite Kingdom of JORDAN

1969

24

Republic of KAZAKHSTAN

1995

25

State of  KUWAIT

1969

26

KYRGHYZ  Republic

1992

27

Republic of  LEBANON

1969

28

Socialist People’s LIBYAN ARAB JAMAHIRIYA

1969

29

MALAYSIA

1969

30

Republic of  MALDIVES

1976

31

Republic of  MALI

1969

32

Islamic Republic of  MAURITANIA

1969

33

Kingdom of  MOROCCO

1969

34

Republic of  MOZAMBIQUE

1994

35

Republic of  NIGER

1969

36

Federal Republic of  NIGERIA

1986

37

Sultanate of OMAN

1972

38

Islamic Republic of PAKISTAN

1969

39

State of  PALESTINE

1969

40

State of  QATAR

1972

41

Kingdom of  SAUDI ARABIA

1969

42

Republic of  SENEGAL

1969

43

Republic of SIERRA LEONE

1972

44

Republic of SOMALIA

1969

45

Republic of SUDAN

1969

46

Republic of SURINAME

1996

47

SYRIAN Arab Republic

1972

48

Republic of TAJIKISTAN

1992

49

Republic of TOGO

1997

50

Republic of  TUNISIA

1969

51

Republic of  TURKEY

1969

52

TURKMENISTAN

1992

53

Republic of UGANDA

1974

54

State of the UNITED ARAB EMIRATES

1972

55

Republic of UZBEKISTAN

1996

56

Republic of  YEMEN

1969

57

2001