|Magnitude 8.0 Ms|
|Areas affected French Haiti|
|Date November 21, 1751 (1751-11-21)|
The 1751 Port-au-Prince earthquake occurred at 12:50 UTC on 21 November in French Haiti, followed by a sea wave. Another earthquake was reported at the same location on 15 September of the same year and it is uncertain whether the two reports refer to the same event.
Later seismologists attributed the 1751 earthquake, like that of 1910, to adjustments along the Southern Trough.