Vehicle Occupancy Alarm Assembly

A vehicle occupancy alarm assembly includes an alert unit that has an input port which is compatible with an on board diagnostic port thereby facilitating the alert unit to be placed in electrical communication with a computer system of a vehicle. The alert unit is actuatable into a first condition to emit an audible alert when the alert unit detects that a rear seat belt is coupled thereby alerting a driver of the vehicle that a passenger is buckled into the rear seat belt. The alert unit is actuatable into a second condition to emit an audible alert when the alert unit detects that the driver's side door is ajar thereby alerting the driver to check for a passenger in the rear seat. The alert unit is actuatable into a third condition to emit an audible alert when the alert unit detects that the vehicle transmission has been placed in a parking gear thereby alerting the driver to check for a passenger in the rear seat.