Direct proof of use
T-54/T-55-series tanks were documented with Russian forces in Ukraine after Russia began drawing older armor from storage in 2023. The War Zone reported in March 2023 that T-54 and T-55 tanks had been removed from storage and seen moving by rail in Russia, and in April 2023 reported imagery of a T-54/T-55-type tank said to be with Russian forces in Zaporizhzhia.
Oryx's visual-loss list for Russia's invasion of Ukraine separately records Russian losses of T-54-3M, T-54B, T-55A, T-55A Obr. 1974, T-55A Obr. 1981, and unidentified T-54/55 tanks, which supports that the family moved beyond storage and appeared as Russian battlefield equipment in the war.
Sources: The War Zone - T-54 Appears In Ukraine, The War Zone - T-54s Sent Toward Ukraine, Oryx - Russian Equipment Losses In Ukraine
Narrative
The documented Russian use of T-54/T-55-series tanks in the 2014 Russia-Ukraine War was not a return to modern tank-on-tank employment. The War Zone assessed the stock-condition vehicle reported in Zaporizhzhia as poorly suited to direct combat against modern armor but still potentially useful for engaging lighter vehicles, fortified positions, or exposed troops, and for static fortified lines.
RUSI's study of Russian tactics in the second year of the full-scale invasion described Russian forces adapting after heavy 2022 losses and examined the shift away from earlier combined-arms formations. In that wider context, the T-54/T-55 family's Ukraine role fits a secondary armor pattern: older tanks added mass and direct-fire capability while more modern vehicles remained under pressure.
The available sources support Russian fielding and losses of the T-54/T-55 family in Ukraine, but they do not support a precise total number deployed or a single standardized role across all units. The strongest documented roles are fire support, static defensive use, and reserve or improvised armor employment rather than primary breakthrough operations.
Sources: The War Zone - T-54 Appears In Ukraine, RUSI - Russian Tactics In Second Year, The Moscow Times - Obsolete Tanks In Ukraine, Oryx - Russian Equipment Losses In Ukraine