| Sankt Johann | |
| Image Coa: | Wappen Sankt Johann.png |
| Coordinates: | 50.35°N 7.1958°W |
| Image Plan: | Sankt Johann in MYK.png |
| State: | Rheinland-Pfalz |
| District: | Mayen-Koblenz |
| Verbandsgemeinde: | Vordereifel |
| Elevation: | 400 |
| Area: | 4.31 |
| Postal Code: | 56727 |
| Area Code: | 02651 |
| Licence: | MYK |
| Gemeindeschlüssel: | 07 1 37 097 |
| Mayor: | Rainer Wollenweber[1] |
| Leader Term: | 2019 - 24 |
| Party: | CDU |
Sankt Johann is a municipality in the district of Mayen-Koblenz in Rhineland-Palatinate, western Germany.