
The flag of Piauí is one of the official symbols to the state of Piauí, in Brazil.

The flag of Belgorod Oblast, a federal subject of Russia, was adopted on June 22, 2000. The flag consists of a blue cross, the four cantons colored white, green, black and red. The white canton is charged with the seal of Belgorod Oblast, consisting of a lion at rest and an eagle above it. The ratio of the flag is 2:3.

The Coptic flag was created in 2005 by Coptic activists in different countries to represent Coptic communities both in Egypt and in the Coptic diaspora. It is not recognized by the Coptic Orthodox Church of Alexandria, and it is not recognized by any official Coptic organization. The only Coptic organization that has recognized the flag is the New Zealand Coptic Association, which is the same association that created the flag. and the Free Copts.

The official flag of Lincolnshire was unveiled at five separate ceremonies across the county on 24 October 2005. The flag was chosen in a popular vote organised by BBC Radio Lincolnshire along with Lincolnshire Life magazine. The winning entry, designed by Lincolnshire-born Michelle Andrews, a web producer at BBC Lincolnshire, was selected from a shortlist of six designs and attracted thousands of votes.

The flag of Nunatsiavut is the flag adopted by the Labrador Inuit Association to represent the Inuit of Labrador and their Land Claims Settlement Area called Nunatsiavut. The flag features the traditional Inuit inuksuk coloured white, blue, and green, echoing the flag of Labrador.

The Flag of Sindh is the flag of the Province of Sindh within Pakistan.

The flag of South Sudan was adopted following the signing of the Comprehensive Peace Agreement that ended the Second Sudanese Civil War. A similar version of the flag was previously used as the flag of the Sudan People's Liberation Movement. The flag of South Sudan is older than the country itself, as the flag was adopted in 2005, while the country became independent in 2011.

The flag of Voronezh Oblast, a federal subject of Russia, was adopted 5 July 2005. The flag is a field of red, with a grouping of yellow rocks on the hoist side. Over the rocks, a liquid pours out of a turned-over white vase. It is also on the Voronezhan coat of arms. The ratio of the flag is 2:3.

The flag of Zanzibar was adopted on 9 January 2005. It is a horizontal tricolour of blue, black, and green with the national flag of Tanzania in the canton.