Chair

A chair comprising:

• a support structure;
• a backrest that is supported rotatably with respect to the support structure around a first axis extending in a widthwise direction of the support structure and that is displaceable to an inclined state tilted rearward from an initial state;
• a regulating part configured to regulate rotation of the backrest around the first axis;
• a return part configured to return the backrest in the inclined state to the initial state;
• a first operation member configured to allow a seated person to operate the regulating part;
• a second operation member configured to allow the seated person to operate the return part;
• and
• a base member configured to support the first operation member and the second operation member,
• wherein the base member extends in the widthwise direction,
• the first operation member is supported by a first support part provided on one end side of the base member in the widthwise direction, and
• the second operation member is supported by a second support part provided on other end side of the base member in the widthwise direction.