T-26 model 1933 - single-turret version with 45mm gun
T-26 model 1935 - single carriage version
T-26-4 (T-26 KT) - artillery tank with 76.2mm cannon
T-26 model 1938
T-26 model 1939
T-26 model 1931/76 mm - twin turret version with 76 mm recoilless gun
T-26 PT - floats for T-26
T-26 PCH - underwater tank
TT-26 - radio remotely guided vehicle
TU-26 - radio-guided vehicle for TT-26
ST-26 - bridge tank
UST-26 - bridge tank
CHT-26 (OT-26) - twin-tank chemical (flame-thrower) tank based on the 1931 model
CHT-130 (OT-130) - flame-thrower tank based on the 1935 model
ChT-131 (OT-131) - flamethrower tank
ChT-132 (OT-132) - flamethrower tank
CHT-133 (OT-133) - flamethrower tank based on the 1939 model
CHT-134 (OT-134) - flamethrower tank based on 1939 model - 2 prototypes
SU-1 - self-propelled gun
SU-5-1 - self-propelled gun
SU-5-2 - self-propelled howitzer
SU-5-3 - self-propelled mortar
SU-6 - self-propelled anti-aircraft gun
AT-1 - self-propelled gun
T-26 T - tractor and transporter
T-26 T2 - tractor
T-26 TN - observation tank
T-26 BSNP - observation tank
TC-26 - self-propelled tank
TR-1 - infantry carrier
TR-4 - armoured personnel carrier
TR-4-1 - ammunition transporter
TR-4-2 - workshop/repair vehicle
TR-4-3 - armoured personnel carrier
TR-26 - universal armoured personnel carrier
TR-26C - self-propelled tanker
6 TK (STZ-24) - a wheeled tracked tank using components from the T-26 type
T-25 (STZ-25) - a hybrid tank project with combined drive based on the T-26 and BT design
STZ-35 - a modified T-25 project, with the wheel drive eliminated
STZ-36 - a flame-throwing tank based on the STZ-35
T-26 with turret from BT-2 tank - Leningrad conversion to self-propelled gun
SU-T-26 - self-propelled gun - "Leningrad" conversion
T-26M - T-26-5 - T-126-1 - tanks with Skoda chassis
T-26/STZ-5 - field conversion of T-26 captured by Ukrainian Insurgent Army (UPA)
T-26 ChM - self-propelled mortar
*request for additions/corrections