To provide a trouser hanger which is easy to use, wherein two arms are easily operated so as to be opened and closed by a single hand by the principle of lever, and bottoms of trousers are nipped so as to be hung by firmly locking the two arms by a fastener.

Two arms are coupled by a support part, and arms are freely opened and closed by a mount shaft. A fastener is provided at a distal end part of the arm (1) to freely perform a predetermined angle rotation by a rotary shaft, and the arm (2) is locked by the fastener so that the trousers are nipped. Each of the distal ends of a grip part of the arm (1) and a grip part of the arm (2) are tapered, and the arm (1) is longer than the arm (2). Accordingly, the grip part (7) of the arm (1) is easily gripped by a single hand, and the grip part (8) of the arm (2) is easily pushed by a thumb of the single hand to facilitate the opening and closing operations. It is attached to a household hanger by a hook.