The T-55-ZU-23 is an improvised Ukrainian short-range air-defense vehicle that combines a T-55-series tank chassis with a ZU-23-family twin 23 mm anti-aircraft gun installation. Public sourcing is narrow but specific: OSCE monitors observed the same T-55/ZU-23 configuration in the Donetsk security zone in January 2017, and MilitaryLand identifies T-55-ZU-23 in the equipment inventory of Ukraine's 54th Mechanized Brigade. The record is best read as a field or depot conversion that trades the T-55's original tank role for mobile high-volume 23 mm fire against low-altitude threats and exposed ground targets.
OSCE monitors observed a ZU-23 anti-aircraft gun mounted on a T-55 tank chassis in a government-controlled part of the Donetsk security zone near Zaitseve on 10 January 2017, and MilitaryLand separately lists T-55-ZU-23 with Ukraine's 54th Mechanized Brigade; available sources support Ukrainian/government-side fielding, not fleet size or standardized production.
Role detailsThe public record identifies the T-55-ZU-23 as a Ukrainian brigade equipment item, while the engineering details are supported by the designation and by separately sourced T-55, ZU-23-2, and 2A14 component records.
A T-55-series tracked tank hull supplies mobility and armor volume, but the source does not identify the exact T-55 mark or conversion workshop.
The ZU-23-family twin 23 mm mount uses two 2A14 autocannons, giving the conversion rapid short-range fire for low-altitude air defense and direct fire against exposed ground targets.
Current sourcing supports Ukrainian 54th Mechanized Brigade context and the named configuration, not fleet size, combat losses, or a standardized production program.
The configuration links two cataloged Soviet-origin systems: a T-55-series tank hull and a ZU-23-family twin 23 mm gun mount.
| Compatible item | Item type | Compatibility evidence |
|---|---|---|
 | Tracked tank chassis | The T-55 hull provides the armored tracked base; the conversion is identified by its T-55-ZU-23 designation rather than by a separate factory vehicle name. Sources: MilitaryLand T-55-ZU-23, T-54 Russian Main Battle Tank (MBT) |
 | Twin 23 mm anti-aircraft gun | The ZU-23-family gun supplies the vehicle's short-range anti-aircraft and direct-fire armament, matching the 23 mm twin-cannon role described in ZU-23 reference sources. |
 | 23 mm autocannon | The ZU-23-2 mount is built around two 2A14 23 mm autocannons, so this component explains the gun installation identified in the T-55-ZU-23 designation. Sources: Army Guide 2A14 Gun, WeaponSystems.net 23mm 2A14, WeaponSystems.net ZU-23-2 |
MilitaryLand records the 54th Mechanized Brigade as active from 1 December 2014 and formed as part of Ukraine's wartime expansion during the Donbas phase of the Russia-Ukraine War.
Sources: MilitaryLand 54th Mechanized Brigade
OSCE monitors reported a ZU-23 anti-aircraft gun mounted on a T-55 tank chassis being towed near Zaitseve in a government-controlled part of the Donetsk security zone.
Sources: OSCE SMM Daily Report 10 January 2017
MilitaryLand's T-55-ZU-23 equipment page was created during the full-scale-war period and lists Ukraine's 54th Mechanized Brigade as an operator of the vehicle.
Sources: MilitaryLand T-55-ZU-23
Jamestown's order-of-battle report describes Ukrainian mechanized brigades as retaining air-defense battalions with gun systems such as ZU-23-2 alongside missile and MANPADS systems, matching the broader role of the T-55-ZU-23 conversion.
Sources: Jamestown Ukrainian Armed Forces Order of Battle
