Fourth Republic

Fourth Republic may refer to:


 * French Fourth Republic (1946–1958)
 * Fourth Republic of Ghana, since 1993
 * Fourth Republic of Korea (1972–1981)
 * Fourth Republic of Niger (1996–1999)
 * Fourth Nigerian Republic, since 1999
 * Fourth Philippine Republic (1972–1986)
 * Fourth Polish Republic, a campaign slogan used by Law and Justice in the 2005 parliamentary elections
 * Fourth Hungarian Republic, Hungary since adoption of 2011 Hungarian constitution