| Conflict: | Siege of Takatō |
| Partof: | the Sengoku period |
| Date: | 1545 |
| Place: | Takatō castle, Shinano Province, Japan |
| Map Type: | Japan Nagano Prefecture#Japan |
| Map Relief: | yes |
| Result: | Takeda victory |
| Combatant1: | forces of Takeda Shingen |
| Combatant2: | forces of Takatō Yoritsugu |
| Commander1: | Takeda Shingen Itagaki Nobukata |
| Commander2: | Ogasawara Nagatoki Tozawa Yorichika |
| Strength1: | 5,000 |
| Strength2: | 5,100 |
The 1545 siege of Takatō castle, Takeda Shingen continuing his sweep through the Ima Valley of Shinano Province, seeking to take control of the entire province, he defeated Takatō Yoritsugu, the castellan.
Takatō had relied on support from his allies, Ogasawara Nagatoki and Tozawa Yorichika, who failed to aid in his defense. This marked the first time Takatō castle had been besieged.