| Official Name: | Imastu |
| Settlement Type: | Village |
| Pushpin Map: | Estonia |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Estonia |
| Subdivision Type: | Country |
| Subdivision Name: |  Estonia |
| Subdivision Type1: | County |
| Subdivision Name1: | Lääne-Viru County |
| Subdivision Type2: | Parish |
| Subdivision Name2: | Tapa Parish |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
Imastu is a village in Tapa Parish, Lääne-Viru County, in northern Estonia.[1] It is located about 2.5km (01.6miles) east of the town of Tapa. Imastu is bordered by the Pärnu–Rakvere road (no. 5) to the southeast, the Tallinn–Tapa–Narva railway to the northwest and the Valgejõgi River to the southwest.
Imastu knight manor (German: Mönnikorb) was first mentioned in written records in 1447. The present-day building was built in the 1880s by master builder from Rakvere. It is an eclectic, irregular building with neo-Romanesque details. Ornamental painted ceilings and tiled stoves have been preserved.[2]