| Is Missile: | yes |
| Type 11 Surface-to-Air Missile | |
| Type: | Mobile, short-range surface-to-air missile |
| Origin: | Japan |
| Design Date: | 2005 |
| Production Date: | 2011–present |
| Service: | 2014–present |
| Used By: | Japan |
| Diameter: | 160 mm |
| Length: | 2.93 meters |
| Weight: | 103 kg |
| Vehicle Range: | 10 km |
| Filling: | HE-fragmentation |
| Engine: | Nissan Motor single-stage solid-fuel rocket motor |
| Guidance: | Kawasaki Heavy Industries inertial guidance with Toshiba passive infrared homing for terminal guidance |
| Detonation: | Contact and radar proximity |
The Type 11 Surface-to-Air Missile (Japanese: 11式短距離地対空誘導弾) or Tan-SAM Kai II is a Japanese developed surface-to-air missile currently in service with the Japan Self-Defense Forces.
The system was developed by Toshiba as a further improvement of the Type 81 Surface-to-Air Missile. Development work on Tan-SAM Kai II started in 2005 and in 2014 Type 11 missile was officially unveiled.
The system is currently deployed by the Japan Ground Self-Defense Force and Japan Air Self-Defense Force.
The AESA radar and fire control system is carried on a Isuzu Type 73 6×6 truck. In JGSDF service the four-tube missile launcher is also carried on a separate Type 73 truck, while in JASDF service a Toyota Mega Cruiser 4×4 is used instead.