| Image Coa: | DEU Osterspai COA.svg |
| Coordinates: | 50.2456°N 7.6161°W |
| Image Plan: | Osterspai in EMS.svg |
| State: | Rheinland-Pfalz |
| District: | Rhein-Lahn-Kreis |
| Verbandsgemeinde: | Loreley |
| Elevation: | 65 |
| Area: | 13.00 |
| Postal Code: | 56340 |
| Area Code: | 02627 |
| Licence: | EMS, DIZ, GOH |
| Gemeindeschlüssel: | 07 1 41 108 |
| Website: | www.osterspai.de |
| Mayor: | Thomas Maier[1] |
| Leader Term: | 2019 - 24 |
| Party: | SPD |
Osterspai (formerly Osterspey) is a municipality in the district of Rhein-Lahn, in Rhineland-Palatinate, in western Germany.