# List of flags with reverses that differ from the obverse

This article contains a list of flags for which the reverse (back ) is different from the obverse (front ). It includes current as well as historic flags of both nations and national subdivisions such as provinces, states, territories, cities and other administrations (including a few that are not recognized by the United Nations or whose sovereignty is in dispute). When the flag is that of a nation, the Subdivision column is blank ( — ).
The list below does not include flags for which the reverse side is congruent (identical ) nor is it a mirror image of the obverse side (horizontally flipped ). Flag sides are usually mirror copy to satisfy manufacturing constraints. Identical flags are much less common and contain an element for which a simple mirror image would be problematic, such as text (e.g. The Flag of Saudi Arabia includes the shahada, an Islamic creed; The Flag of Iraq includes the Takbir) or a geographic feature (e.g. The Flag of the United Nations included an Azimuthal equidistant projection of the earth). Flags having a truly different designs on both their sides (two-sided ) differ from the norm. The only UN-recognized nation whose present-day flag officially contains a unique image on each side is Paraguay.
Not all impression of two-sided flags are de facto two-sided because of practical manufacturing constraints or, judging from how often it was disregarded in practice, some formal concern of heraldic nature. As such it may very well be prescribed legally from the very beginning and ever ignored in practice by institutions of every type.
Many of those flags are reconstructions based on various degree of evidence.

## Flags by nation

List of two-sided flags :
| Nation | Subdivision | Dates | Obverse | Reverse | Notes |
| Argentina | San Juan | 2018–present | | | Flag of San Juan |
| Argentina | San Juan | 1997–2018 | | | Flag of San Juan |
| Austria-Hungary | Common Army | 1867–1918 | | | Austro-Hungarian Army |
| Austria-Hungary | Imperial-Royal Landwehr | 1867–1918 | | | Austro-Hungarian Army |
| Austria-Hungary | Royal Croatian Home Guard | 1867–1918 | | | Austro-Hungarian Army |
| Austria-Hungary | Royal Hungarian Honvéd | 1867–1918 | | | Austro-Hungarian Army |
| Azerbaijan | Internal Troops | 2002–present | | | Flag of Azerbaijan |
| Bangladesh | — | 1971–1972 | | | Flag of Bangladesh |
| Belarus | Presidential Security Service | 1995–present | | | List of Belarusian flags |
| Brazil | Paraíba | 1965–present | | | Flag of Paraíba |
| Brazil | Piauí | 1922–present | | | Flag of Piauí |
| Brazil | São Paulo | 1922–present | | | Flag of São Paulo |
| British Empire | Province of New York | 1775–1777 | | | George Rex Flag |
| Bulgaria | Stara Zagora | 1996–present | | | Flag of Stara Zagora |
| Comoros | — | 1996–2001 | | | Flag of the Comoros |
| East Timor | National Council of Maubere Resistance | 1998–2002 | | | Flag of East Timor |
| El Salvador | — | 1877–Nov 2 1898 and Nov 30 1898–1912 | | | Flag of El Salvador |
| Ethiopian Empire | Imperial Standard | 1962–1975 | | | Haile Selassie |
| Republic of Formosa | — | 1895 | | | Flag of the Republic of Formosa |
| Hungarian People's Republic | Scout Association | 1970 | | | Flag of Hungary |
| Hungary | Csernely | 1991–present | | | Flag of Csernely |
| Hungary | Dömsöd | ?–present | | | Flag of Dömsöd |
| Hungary | Dorog | 1919–present | | | Flag of Dorog |
| Hungary | Kecel | ?–present | | | Flag of Kecel |
| Iceland | President of Iceland | 1944–present | | | Flag of Iceland |
| Indonesia | Indonesian National Armed Forces | ?–present | | | Flag of Indonesia |
| Indonesia | Indonesian Army | ?–present | | | Flag of Indonesia |
| Indonesia | Indonesian Navy | ?–present | | | Flag of Indonesia |
| Indonesia | Indonesian Air Force | ?–present | | | Flag of Indonesia |
| Indonesia | Indonesian National Police | ?–present | | | Flag of Indonesia |
| Lithuania | State flag | 1918–1940 | | | President used a variant with aspect ratio of 1:1. |
| Lithuania | Lithuanian Armed Forces | | | | List of flags of Lithuania |
| Luxembourg | Army of Luxembourg | 1982–present | | | Flag of Luxembourg On military flag and emblems (I). The Grand Ducal Order. 15 February 1982. |
| Madagascar | President of Madagascar | 1959–1972 | | | Flag of Madagascar |
| Madagascar | President of Madagascar | 1972–1975 | | | Flag of Madagascar |
| Madagascar | President of Madagascar | 1976–1993 | | | Flag of Madagascar |
| Madagascar | President of Madagascar | 1993–1996 | | | Flag of Madagascar |
| Madagascar | President of Madagascar | 1998–2002 | | | Flag of Madagascar |
| Moldavian Democratic Republic | — and Sfatul Țării | 1999–present | | | Flag of Moldova |
| Moldavia | Infantry Battalion | 1346–1859 | | | Flag and coat of arms of Moldavia We have very little information on ancient Moldavian and Wallachian flags. For Moldavia the most important symbol has always been the wild ox head, which is still to be found on the flag of the new Moldavian republic. In early times the red prevailed on other colours: on standards, the wild ox head appeared on the recto, while the verso represented St. George killing the dragon. It seems that this standard was adopted by Bogdan I and maintained by Stephan the Great and successors. In the following century (XIX) the blue was added. According to an 1813 document, under prince Scarlat Calimachi the princely standard was red, yellow and blue on the recto (without any symbol), while on the verso was St George riding a horse on a blue field. Another document, dated 1814, again reports a red standard. Michael II Sutu (1819-21) had a blue flag with the wild ox head on the recto and red with St George the verso. The two Moldavian flags above from the XV-XVI c. are in Bucharest museum. |
| Moldavia | Infantry Battalion | 1834–1849 | | | Flag and coat of arms of Moldavia We have very little information on ancient Moldavian and Wallachian flags. For Moldavia the most important symbol has always been the wild ox head, which is still to be found on the flag of the new Moldavian republic. In early times the red prevailed on other colours: on standards, the wild ox head appeared on the recto, while the verso represented St. George killing the dragon. It seems that this standard was adopted by Bogdan I and maintained by Stephan the Great and successors. In the following century (XIX) the blue was added. According to an 1813 document, under prince Scarlat Calimachi the princely standard was red, yellow and blue on the recto (without any symbol), while on the verso was St George riding a horse on a blue field. Another document, dated 1814, again reports a red standard. Michael II Sutu (1819-21) had a blue flag with the wild ox head on the recto and red with St George the verso. The two Moldavian flags above from the XV-XVI c. are in Bucharest museum. |
| Moldova | — | 1990–2010 | | | Flag of Moldova |
| Moldova | Information and Security Service | 1999–present | | | | Flag of Moldova |
| Moldova | Gagauzia | 1995–present | | | Flag of Gagauzia |
| Nazi Germany | — | 1935–1945 | | | Flag of Nazi Germany |
| North Korea | Ministry of Defence | 2023–present | | | List of North Korean flags |
| North Korea | Korean People's Army | 1948 | | | List of North Korean flags |
| North Korea | Korean People's Army | 1948–1961 | For Guards only up to 1961: | For Guards only up to 1961: | List of North Korean flags |
| North Korea | Korean People's Army | 1961–1992 | | | List of North Korean flags |
| North Korea | Korean People's Army | 1992–1993 | | | List of North Korean flags |
| North Korea | Korean People's Army Ground Force | 2023–present | | | List of North Korean flags |
| North Korea | Korean People's Army Air Force | 2023–present | | | List of North Korean flags |
| North Korea | Korean People's Navy | 2023–present | | | List of North Korean flags |
| North Korea | Korean People's Army Strategic Rocket Force | 2018–2020 | | | List of North Korean flags |
| North Korea | Korean People's Army Special Operation Force | 2018–2020 | | | List of North Korean flags |
| North Korea | Worker-Peasant Red Guards | 2023–present | | | List of North Korean flags |
| Paraguay | — | 1842–1954 | | | Flag of Paraguay |
| Paraguay | — | 1954–1988 | | | Flag of Paraguay |
| Paraguay | — | 1988–1990 | | | Flag of Paraguay |
| Paraguay | — | 1990 | | | Flag of Paraguay |
| Paraguay | — | 1990–2013 | | | Flag of Paraguay |
| Paraguay | — | 2013–present | | | Flag of Paraguay |
| Philippines | — | 1898–1901 | | | Flag of the Philippines Obverse has "Fuerzas Expeditionarias del Norte de Luzon" inscribed Reverse has the words "Libertad Justicia e Igualdad" inscribed. |
| Rattanakosin Kingdom | Siamese Expeditionary Forces | 1917–1919 | | | Flag of the Rattanakosin Kingdom |
| Romania | Romanian Air Force | 1992–present | | | List of Romanian flags |
| Romania | Romanian General Staff | 1992–present | | | List of Romanian flags |
| Romania | Romanian Land Forces | 1992–present | | | List of Romanian flags |
| Romania | Romanian Naval Forces | 1992–present | | | List of Romanian flags |
| Romania | Battle flag | 1950–1952 | | | List of Romanian flags |
| Romania | Battle flag | 1952–1965 | | | List of Romanian flags |
| Romania | Battle flag | 1966–1989 | | | List of Romanian flags |
| Romania | Romanian Air Force | 1950–1952 | | | List of Romanian flags |
| Romania | Romanian Air Force | 1952–1965 | | | List of Romanian flags |
| Romania | Romanian Patriotic Guards | 1977–1989 | | | List of Romanian flags |
| Romania | Romanian Naval Forces | 1950–1951 | | | List of Romanian flags |
| Romania | Romanian Naval Forces | 1952–1965 | | | List of Romanian flags |
| Russia | Mari El | 1992–2006 | | | Flag of Mari El |
| Russia | Gorodishchensky District | 2002–2012 | | | Flag of the Gorodishchensky District |
| Russia | Russian Armed Forces | 2003–present | | | List of Russian flags |
| Russia | Russian Ground Forces | 2002–present | | | List of Russian flags |
| Russia | Russian Aerospace Forces | 2002–present | | | List of Russian flags |
| Saudi Arabia | Civil ensign | 1980–present | | | Flag of Saudi Arabia |
| Soviet Union | — | 1923–1991 | | | Flag of the Soviet Union |
| Soviet Union | Armenian SSR | 1952–1990 | | | Flag of Armenian SSR |
| Soviet Union | Azerbaijan SSR | 1952–1991 | | | Flag of Azerbaijan SSR |
| Soviet Union | Byelorussian SSR | 1951–1991 | | | Flag of Byelorussian SSR |
| Soviet Union | Estonian SSR | 1953–1990 | | | Flag of Estonian SSR |
| Soviet Union | Georgian SSR | 1951–1990 | | | Flag of Georgian SSR |
| Soviet Union | Karelo-Finnish SSR | 1953–1956 | | | Flag of Karelo-Finnish SSR |
| Soviet Union | Kazakh SSR | 1953–1992 | | | Flag of Kazakh SSR |
| Soviet Union | Kirghiz SSR | 1952–1992 | | | Flag of Kirghiz SSR |
| Soviet Union | Latvian SSR | 1953–1990 | | | Flag of Latvian SSR |
| Soviet Union | Lithuanian SSR | 1953–1988 | | | Flag of Lithuanian SSR |
| Soviet Union | Moldavian SSR | 1952–1990 | | | Flag of Moldavian SSR |
| Soviet Union | Russian SFSR | 1954–1991 | | | Flag of the Russian SFSR |
| Soviet Union | Tajik SSR | 1953–1992 | | | Flag of Tajik SSR |
| Soviet Union | Turkmen SSR | 1953–1992 | | | Flag of Turkmen SSR |
| Soviet Union | Ukrainian SSR | 1949–1991 | | | Flag of Ukrainian SSR |
| Soviet Union | Uzbek SSR | 1952–1991 | | | Flag of Uzbek SSR |
| Soviet Union | Soviet Army | 1946–1992 | | | List of Russian flags |
| Spain | Almendros | 1988–present | | | List of Spanish flags |
| Spain | Arapiles | 1993–present | | | List of Spanish flags |
| Spain | Burgueta | 2001–present | | | List of Spanish flags |
| Spain | Puebla de Almenara | 1988–present | | | List of Spanish flags |
| Spain | Villarrubio | 1988–present | | | List of Spanish flags |
| Transnistria | — | 1991–present | | | Flag of Transnistria |
| Vietnam | People's Army of Vietnam | 1991–present | | | Flag of Vietnam |
| Vietnam | Vietnam People's Public Security | 1991–present | | | Flag of Vietnam |
| United States | Alabama | 1861–1865 | | | Flag of Alabama |
| United States | Massachusetts | 1908–1971 | | | Flag of Massachusetts |
| United States | Minnesota | 1893–1957 | | | Flag of Minnesota |
| United States | Oregon | 1925–present | | | Flag of Oregon |
| United States | Raleigh, North Carolina | 1960–present | | | Flag of Raleigh, North Carolina |
| United States | Richmond, Virginia | 1914–1933 | | | Flag of Richmond, Virginia |
| United States | West Virginia | 1905–1907 | | | Flag of West Virginia, Carmine red fringe |
| United States | West Virginia | 1907–1929 | | | Flag of West Virginia, Old gold fringe |