Abstract: The ventilated ergonomic bed mattress is adapted for use by a client. The ventilated ergonomic bed mattress is a cushion used by the client for sleeping. The ventilated ergonomic bed mattress is constructed such that the client can sleep on the ventilated ergonomic bed mattress such that the anterior side of the client is proximal to the ventilated ergonomic bed mattress. Stated less formally, the ventilated ergonomic bed mattress allows a client to sleep face down. The ventilated ergonomic bed mattress comprises a mattress structure and a plurality of chambers. The mattress structure forms the cushion on which the client rests. The plurality of chambers is a collection of negative spaces formed in the mattress structure used to accommodate the head and the plurality of appendages of the client.