Compatibility summary
Your Canada plug may fit in Haiti outlets, as both use at least one common plug type.
Plug comparison
Canada plug types: A B
Haiti plug types: A B
Both countries share at least one plug type (A B and A B), so some plugs may work without an adapter. Check your appliance.
Voltage comparison
Canada: 120V, 60Hz
Haiti: 110V, 60Hz
Voltage difference is within a range many devices tolerate; check your appliance label.