The present invention relates to a motor and a brake device including the same, wherein the motor including: a rotary shaft; a rotor part in which the rotary shaft is disposed at the center thereof; a stator part disposed on the outside of the rotor part; a housing accommodating the rotor part and the stator part, and having an opening formed at one side thereof; and a motor cover disposed at the opening of the housing, wherein the motor cover includes: a motor cover body; a first protruding part and a second protruding part, which are each formed at a predetermined location and configured to protrude in the radial direction from the center of the motor cover body; and a third protruding part formed to protrude from an edge of the motor cover body, and a sealing part is further disposed between the second protruding part and the end portion of the housing disposed between the second protruding part and the third protruding part.