| Bolătău | |
| Name Other: | Largu |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Neamț County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Petru Vodă, Poiana Largului |
| Length: | 13km (08miles) |
| Mouth: | Bistrița |
| Mouth Location: | Lake Izvorul Muntelui near Poiana Largului |
| Mouth Coordinates: | 47.0911°N 25.9678°W |
| Basin Size: | 60km2 |
| Tributaries Left: | Mogorogea |
The Bolătău (also: Largu) is a left tributary of the river Bistrița in Romania. It flows into Lake Izvorul Muntelui near Poiana Largului. Its length is 13km (08miles) and its basin size is 60km2.