A chair, especially an office chair, has a base and a seat disposed thereon as well as a backrest. The seat and the backrest are supported such that they can be pivoted about horizontal axes in a coordinated manner, and at least one gas spring is provided for damping the pivoting movement and for attaining a restoring action. In such a chair, in order to attain an anatomically appropriate adjustment of the inclination which is perceived by the user as pleasant, and to attain the simplest and most effective possible construction, the chair includes a seat carrier (4) and a backrest support part (7), which is joined to the seat carrier such that it is pivotable about an axis (6), for securing a backrest supporting column (9); a supporting column (2) of the base (1) is rigidly fixable on the seat carrier (4); a seat holder (19) projecting upward beyond the seat carrier (4) and being pivotable thereon is provided on the seat carrier (4); the seat (3), in the vicinity of a front section, is rigidly joined to the seat holder (19); the seat (3), in the vicinity of a section located behind the axis (6), is elastically joined to the backrest support part (7); and a gas spring (33) is disposed between the backrest support part (7) and the seat carrier (4), extending obliquely with respect to the seat (3).