Provided is a valve gear for an engine, the valve gear being equipped with: a shaft that rotates as a result of receiving a rotational force from a crankshaft; a cam element that is attached to the shaft; and an operation member that causes the cam element to move. A first end surface cam and a second end surface cam, which each have a lift portion, are provided at the two ends of the cam element in an axial direction. The operation member is provided so as to be able to advance and retreat between an operation position and a retracted position, and includes: a first operation member that is engaged with the lift portion of the first end surface cam and causes the cam element to move in a first direction along the axial direction; and a second operation member that is engaged with the lift portion of the second end surface cam and causes the cam element to move in a second direction, which is opposite to the first direction. The first end surface cam is provided with: a first slope portion that extends in a rotation delay direction from the lift portion and guides the first operation member toward the outside in a diameter direction of the cam element in conjunction with the rotation of the cam element; and a displacement permitting portion that is provided adjacent to the first slope portion and permits relative displacement between the first operation member, which is guided along the first slope portion, and the cam element.