| 3rd Mechanized Corps | |
|---|---|
| Active | June 1940 – June 1941 |
| Country | Soviet Union |
| Branch | Red Army |
| Type | Mechanized corps |
| Size | 669 tanks and 224 armored cars (20 June 1941) |
| Engagements | Battle of Raseiniai |
| Commanders | |
| Notable commanders | |
The 3rd Mechanized Corps (Russian: 3-й механизированный корпус) was a mechanized corps of the Red Army. Formed in June 1940 during World War II, the corps was stationed in occupied Lithuania under the Baltic Special Military District. The corps was destroyed in late June 1941 during the Battle of Raseiniai, one of the initial battles of Operation Barbarossa.