Abstract: An automatic toilet seat lowering hinge assembly for automatically lowering a toilet seat from a raised position to a lower position above the toilet seat includes a housing having a chamber through which a shaft is disposed therein. The shaft is releasibly attached to the toilet seat. The housing has a baffle extending from the inner surface of the housing to the surface of the shaft and a descent paddle extends from the shaft outwardly toward the inner surface of the housing to partition the chamber into two compartments. A vent controls the transfer of fluid between the partitioned chamber compartments so that the toilet seat pivots from the raised position to the lower position in a predetermined amount of time.