A hair clipper (1) includes a comb-shaped blade unit (5) arranged in a front longitudinal end portion (4) of a main body portion (2). A movable portion (8) is mounted to the main body portion for sliding along a longitudinal direction (L) of the main body portion and for rotation about a rotational axis (Ax) substantially parallel to a reciprocating direction of the blades. The movable portion includes a first comb portion (9A) having a plurality of hair strand passages through which to pass hair strands to be clipped. The first comb portion is arranged to cover a front longitudinal side of the main body portion when the first comb portion is in an in-use position. The main body portion is configured to hold the first comb portion in a rest position spaced apart from the in-use position toward the other longitudinal end portion of the main body portion.