Luhansk Oblast is the easternmost oblast (province) of Ukraine. The oblast uses a cobalt flag charged with its coat of arms.

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You can help expand this article with text translated from the corresponding article in Ukrainian. (June 2022) Click [show] for important translation instructions. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Consider adding a topic to this template: there are already 331 articles in the main category, and specifying|topic= will aid in categorization. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Ukrainian Wikipedia article at [[:uk:Прапор Луганської області]]; see its history for attribution. You should also add the template {{Translated|uk|Прапор Луганської області}} to the talk page. For more guidance, see Wikipedia:Translation.

The flag consists of a cobalt background with a side ratio of 1:1.5 (100 X 165 cm). In the top-left corner of the flag there is a circle, with a radius of 20 cm. The circle's center is 49 cm from the left border of the flag and 39 cm from the top border. Seventeen yellow and 14 white smaller stars, 4 cm in size, surround it. The Luhansk Oblast's small coat of arms is located within the circle.^[1]