Sir John Johnston | |
|---|---|
| Predecessor | George Johnston |
| Successor | John Johnston |
| Born | John Johnston 1640s |
| Died | 23 December, 1690 |
Sir John Johnston, 3rd Baronet of Caskieben (c. 1648 – 23 December 1690) was a Scottish soldier who was executed for his part in the abduction of Mary Wharton.