| Country | Constitution |
| Estonia | adopted 28 June 1992 |
| Ethiopia | ratified 8 December 1994, effective 22 August 1995 |
| European Union |  based on a series of treaties: the Treaty of Paris, which set up the European Coal and Steel Community (ECSC) in 1951; the Treaties of Rome, which set up the European Economic Community (EEC) and the European Atomic Energy Community (Euratom) in 1957; the Single European Act in 1986; the Treaty on European Union (Maastricht) in 1992; the Treaty of Amsterdam in 1997; and the Treaty of Nice in 2003; note - a new draft Constitutional Treaty, signed on 29 October 2004 in Rome, gave member states two years for ratification either by parliamentary vote or national referendum before it was scheduled to take effect on 1 November 2006; defeat in French and Dutch referenda in May-June 2005 dealt a severe setback to the ratification process; in June 2007, the European Council agreed on a clear and concise mandate for an Intergovernmental Conference to form a political agreement and put it into legal form; this agreement, known as the Reform Treaty, which would have served as a constitution and was presented to the European Council in October 2007 for individual country ratification, was rejected by the Irish voters in June 2008 |
| Falkland Islands (Islas Malvinas) | 3 October 1985; amended 1997 and 1998 |
| Faroe Islands | 5 June 1953 (Danish constitution) |
| Fiji | enacted on 25 July 1997 to encourage multiculturalism and make multiparty government mandatory; effective 28 July 1998 |
| Finland | 1 March 2000 |
| France | adopted by referendum 28 September 1958, effective 4 October 1958 note: amended concerning election of president in 1962; amended to comply with provisions of 1992 EC Maastricht Treaty, 1997 Amsterdam Treaty, 2003 Treaty of Nice; amended to tighten immigration laws in 1993; amended in 2000 to change the seven-year presidential term to a five-year term; amended in 2005 to make the EU constitutional treaty compatible with the Constitution of France and to ensure that the decision to ratify EU accession treaties would be made by referendum |
| French Polynesia | 4 October 1958 (French Constitution) |
| French Southern and Antarctic Lands | void |
| Gabon | adopted 14 March 1991 |
| Gambia, The | approved by national referendum 8 August 1996; effective 16 January 1997 |
| Gaza Strip | void |
| Georgia | adopted 24 August 1995 |
| Germany | 23 May 1949, known as Basic Law; became constitution of the united Germany 3 October 1990 |
| Ghana | approved 28 April 1992 |
| Gibraltar | 5 June 2006; came into force 2 January 2007 |
| Greece | 11 June 1975; amended March 1986 and April 2001 |
| Greenland | 5 June 1953 (Danish constitution) |
| Grenada | 19 December 1973 |
| Guam | Organic Act of Guam, 1 August 1950 |
| Guatemala | 31 May 1985, effective 14 January 1986; note - suspended 25 May 1993 by former President Jorge SERRANO; reinstated 5 June 1993 following ouster of president; amended November 1993 |
| Guernsey | unwritten; partly statutes, partly common law and practice |
| Guinea | 23 December 1990 (Loi Fundamentale) |
| Guinea-Bissau | 16 May 1984; amended 4 May 1991, 4 December 1991, 26 February 1993, 9 June 1993, and in 1996 |
| Guyana | 6 October 1980 |
| Haiti | approved March 1987; suspended June 1988 with most articles reinstated March 1989; constitutional government ousted in a military coup in September 1991, although in October 1991, military government claimed to be observing the constitution; returned to constitutional rule in October 1994; constitution, while technically in force between 2004-2006, was not enforced; returned to constitutional rule in May 2006 |
| Heard Island and McDonald Islands | void |
| Holy See (Vatican City) | new Fundamental Law promulgated by Pope John Paul II on 26 November 2000, effective 22 February 2001 (replaces the first Fundamental Law of 1929) |
| Honduras | 11 January 1982, effective 20 January 1982; amended many times |
| Hong Kong | Basic Law, approved in March 1990 by China's National People's Congress, is Hong Kong's "mini-constitution" |