| Sankt Sebastian | |
| Image Coa: | Wappen Sankt Sebastian am Rhein in Deutschland farbe.png |
| Coordinates: | 50.4122°N 7.5633°W |
| Image Plan: | Sankt Sebastian in MYK.png |
| State: | Rheinland-Pfalz |
| District: | Mayen-Koblenz |
| Verbandsgemeinde: | Weißenthurm |
| Elevation: | 69 |
| Area: | 2.88 |
| Postal Code: | 56220 |
| Area Code: | 0261 |
| Licence: | MYK |
| Gemeindeschlüssel: | 07 1 37 222 |
| Website: | www.sankt-sebastian.de |
| Mayor: | Marco Seidl[1] |
| Leader Term: | 2019 - 24 |
Sankt Sebastian is a municipality in the district of Mayen-Koblenz in Rhineland-Palatinate, western Germany.