A pedal assembly for a vehicle is provided and includes a housing and a pedal part that is rotatably coupled to the housing. A movable member has an inclined surface formed on one side thereof and slidably moves with respect to the housing. A connection member moves in cooperative operation with the rotation of the pedal part. Additionally, a friction member is connected to the connection member and slidably moves along the inclined surface of the movable member in the state of being brought into contact with the inclined surface and an elastic member is located between the other side of the movable member and the housing.