M3 (Disambiguation)
M3 may refer to:
Ground Vehicles
Light tanks
- Rank I
- M3 Stuart
- M3A1 Stuart
- M3A1 (USMC)
- M3A3 Stuart (China) - Lend-lease
- M3A3 Stuart (France) - Lend-lease
- Rank II
- Rank VI
Medium tanks
- Rank I
- M3 Lee
- M3 Grant - British variant in US Tree
- M3 Grant (Great Britain) - British variant
- M3 Medium (USSR) - Lend-lease
Tank destroyers
- Rank I