Nauru
29 January 1968; amended 17 May 1968

Nepal
15 January 2007 (interim Constitution); note - in April 2008,
a Constituent Assembly was elected to draft and promulgate a new
constitution by May 2010

Netherlands
adopted 1815; amended many times, most recently in 2002

Netherlands Antilles
29 December 1954, Statute of the Realm of the
Netherlands, as amended

New Caledonia
4 October 1958 (French Constitution)

New Zealand
consists of a series of legal documents, including
certain acts of the UK and New Zealand parliaments, as well as The
Constitution Act 1986, which is the principal formal charter;
adopted 1 January 1987, effective 1 January 1987

Nicaragua
9 January 1987; revised in 1995, 2000, and 2005

Niger
adopted 18 July 1999

Nigeria
adopted 5 May 1999; effective 29 May 1999

Niue
19 October 1974 (Niue Constitution Act)