A securable pet door is disclosed. The securable pet door may comprise at least one door, at least one knob, one or more windows, at least one frame, and/or at least one hinge. The knob comprises a latch for secure closing. When the pet door comprises at least one hinge, the hinge(s) may be inserted into at least one hinge recess so that the door may be securely locked via at least one locking mechanism. The different elements of the securable pet door are configured to be oriented in a predetermined, securable, or customizable manner. The door is configured to open from, slide into, revolve within, or move in some other non-limiting equivalent way from or relative to a frame.