| Country | Constitution |
| Croatia | adopted 22 December 1990; revised 2000, 2001 |
| Cuba | 24 February 1976; amended July 1992 and June 2002 |
| Curacao | Staatsregeling, 10 October 2010; revised Kingdom Charter pending |
| Cyprus | 16 August 1960 note: from December 1963, the Turkish Cypriots no longer participated in the government; negotiations to create the basis for a new or revised constitution to govern the island and for better relations between Greek and Turkish Cypriots have been held intermittently since the mid-1960s; in 1975, following the 1974 Turkish intervention, Turkish Cypriots created their own constitution and governing bodies within the "Turkish Federated State of Cyprus," which they then called the "Turkish Republic of Northern Cyprus (TRNC)" when the Turkish Cypriots declared independence in 1983; a new constitution for the "TRNC" passed by referendum on 5 May 1985, although the "TRNC" remains unrecognized by any country other than Turkey |
| Czech Republic | ratified 16 December 1992, effective 1 January 1993; amended several times |
| Denmark | 5 June 1953; note - constitution allowed for a unicameral legislature and a female chief of state |
| Dhekelia | Sovereign Base Areas of Akrotiri and Dhekelia Order in Council 1960, effective 16 August 1960, functions as a basic legal document |
| Djibouti | approved by referendum 4 September 1992; note - constitution allows for multiparties |
| Dominica | 3 November 1978 |
| Dominican Republic | 28 November 1966; amended 25 July 2002 and January 2010 |
| Ecuador | 20 October 2008 |
| Egypt | 11 September 1971; amended 22 May 1980, 25 May 2005, and 26 March 2007; note - constitution suspended by the military caretaker government 13 February 2011 and a new provisional constitution adopted 30 March 2011 |
| El Salvador | 20 December 1983 |
| Equatorial Guinea | approved by national referendum 17 November 1991; amended January 1995 |
| Eritrea | adopted 23 May 1997, but has not yet been fully implemented |
| Estonia | adopted 28 June 1992 |
| Ethiopia | ratified 8 December 1994, effective 22 August 1995 |