Takatō Castle, Japanese castle in Ina, Japan.

Takatō Castle is a fortress site in Ina, Nagano Prefecture, set on a natural hill and surrounded by old stone walls and groves of trees. The remains of the wooden buildings are gone, but the foundations and ramparts still show the layout of the original defensive complex.

Takatō Castle was held by the Takatō branch of the Suwa clan before the Takeda took it in the 1540s; Shingen had it rebuilt around 1547 under Yamamoto Kansuke and Akiyama Torihide. Takeda Katsuyori became its lord in 1562, and in 1582 Nobunaga's son Nobutada stormed it, killing Nobushige and the 3,000-strong garrison. In the Edo period it became the seat of the Takatō domain, ruled by the Kyōgoku, Hoshina and Torii, then by eight generations of the Naitō until 1868.

The name Takatō refers to the elevated position of the fortress, and today locals visit the grounds especially during cherry blossom season in spring. The paths fill with families who walk beneath the old trees and admire the pink petals.

The park is open daily and free to enter, and the marked trails lead through the different areas of the former fortress complex. The cherry tree groves bloom in April, when most visitors arrive, but outside this period the site is quieter and better suited for longer walks.

The fortifications were adapted to the steep slopes and narrow valleys of the surrounding mountains, incorporating natural barriers into the defense strategy. This arrangement differs from the flatter castle sites found in other regions of Japan.