The 111th Territorial Defense Brigade () is a military formation of the Territorial Defense Forces of Ukraine in Luhansk Oblast. It is part of Operational Command East.
On 26 June 2018, the brigade was formed in Luhansk Oblast. At time of formation, brigade was made up of only 23 servicemen. 6 battalions were planned in Lysychansk, Rubizhne, Sievierodonetsk, Starobilsk, Svatove and Bilovodsk.
After 24 February units of the brigade were reinforced with new recruits and numbered over 2,500. Units of the brigade took part in defense of Rubizhne, Sievierodonetsk, Lysychansk, Voevodivka, Pryvillia, Zolote, Hirske, Novotoshkivske, Toshkivka, Bilohorivka, Shypylivka, Vrubivka, Verkhniokamianske, Mykolaivka, Lyman, Yampolivka, Terny, Torske, Kreminna, Ustynivka, Druzhba and Volodymyrivka. The formation was awarded its battle flag on 27 August 2022.
After the brigade was rotated from the front-lines, it was sent Belarus border with Volyn Oblast for rest and training. In July 2023 brigade was still in that area. 59 servicemen of the brigade were awarded with medals and orders. In August 118th battalions was renamed 118th Sievierodonetsk battalion.
As of 2022 the brigade's structure is as follows:
Emblem shows a stylized walking golden horse on green field, which was a historical symbol of Starobilsk sotnia of the Ostrogozhsk Regiment.