To provide a foldable wheelchair in which distortion of a seat section is prevented with a simple configuration to improve ride feeling and reduce user's labor.

A front support member (a front support part) 12 for supporting the front end 5a of a left seat pipe 5 and a rear support member (a rear support part) 15 for supporting the rear end 5c of the left seat pipe 5 are arranged on the top surface of the upper pipe 2b of a left frame 2 so as to regulate forward and backward movements of the left seat pipe 5 using the front support member 12 and the rear support member 15. Another front support member (a front support part) 12 for supporting the front end 6a of a right seat pipe 6 and another rear support member (a rear support part) 15 for supporting the rear end 6c of the right seat pipe 6 are arranged on the top surface of the upper pipe 3b of a right frame 3 so as to regulate forward and backward movements of the right seat pipe 6 using the front support member 12 and the rear support member 15.