| Pieter Mijer | |
| Office: | Governor-General of the Dutch East Indies |
| Term Start: | 28 December 1866 |
| Term End: | 1 January 1872 |
| Predecessor: | Ludolph Anne Jan Wilt Sloet van de Beele |
| Successor: | James Loudon |
| Birth Date: | 3 June 1812 |
| Birth Place: | Batavia, Dutch East Indies |
| Death Place: | Scheveningen, Netherlands |
Pieter Mijer (3 June 1812 – 6 February 1881) was the Governor-General of the Dutch East Indies in 1866–1872.[1]