Many countries have different flags, and now about Uzbekistan.

Wikimedia Commons has media related to Flags of Uzbekistan.

National Flag

Flag	Date	Use	Description
	18 November 1991–present	Flag of Republic of Uzbekistan	Three horizontal blue, white and green stripes, separated by two narrow red stripes. A crescent and twelve stars in three rows are situated on the left side of the upper blue stripe.

Government Flag

Flag	Date	Use	Description
	1992–present	Presidential Standard of Uzbekistan	Three horizontal blue, white and green stripes, separated by two narrow red stripes with the Presidential Seal of Uzbekistan in the centre.

Military Flag

Flag	Date	Use	Description
	1992–present	Naval Flag of Uzbekistan

Autonomous Republic

Flag	Date	Use	Description
	1991–present	Flag of the Republic of Karakalpakstan

Flags of Historical States existed in Uzbekistan

Flag	Date	Use
	VI-IIX centuries	Flag of the Göktürks Khaganate
	IX-X centuries	Flag of Samanids
	IX-XIII centuries	Flag of Kara-Khanid Khanate
	1207–1220	Flag of Khwarazmian Empire
	1266–1347	Flag of the Chagatay Khanate
	1370–1405	Flag of the Timurid Empire
	1405–1526	Flag of the Timurid Empire
	1511–1740	Flag of the Khanate of Khiva
	1785–1870	Flag of the Emirate of Bukhara
	1920	Flag of the Emirate of Bukhara
	1917–1920	Flag of the Khanate of Khiva
	1917–1918	Flag of the Turkestan Autonomy
	1921–1923	Flag of the Bukharan People's Soviet Republic
	1920–1923	Flag of the Khorezm People's Soviet Republic
	1919–1921	Flag of the Turkestan Autonomous Soviet Socialist Republic
	1921–1924	Flag of the Turkestan Autonomous Soviet Socialist Republic
	22 July 1925-1927	Flag of The Uzbek SSR (First version)
	1927-9 May 1929	Flag of The Uzbek SSR (Second version)
	9 May 1929-28 February 1931	Flag of The Uzbek SSR (Third version)
	28 February 1931-1934	Flag of The Uzbek SSR (Fourth version)
	1934-1935	Flag of The Uzbek SSR (Fifth version)
	1934–1937	Flag of the Karakalpak Autonomous Soviet Socialist Republic
	1935-14 February 1937	Flag of The Uzbek SSR (Sixth version)
	14 February 1937-23 July 1938	Flag of The Uzbek SSR (Seventh version)
	1937–1952	Flag of the Karakalpak Autonomous Soviet Socialist Republic
	23 July 1938-16 January 1941	Flag of The Uzbek SSR (Eighth version)
	1939-1941	Flag of The Uzbek SSR (Ninth Version)
	1941-1952	Flag of The Uzbek SSR (Tenth Version)
	1952–1991	Flag of the Karakalpak Autonomous Soviet Socialist Republic
	1952–1991	Flag of The Uzbek SSR (Final version)