Vehicle seat and vehicle

The present invention addresses the problem of providing a vehicle seat and a vehicle capable of improving the supporting performance of a side section to an occupant. Since the cover part (220) (side frame (20)) is sandwiched between the left and right sides by the first leg part (331) and the second leg part (332) of the insert (33), even if the load applied from the occupant to the side part (31) of the seat cushion (3) is relatively large, the deformation of the side part (31) toward the outside in the left-right direction (rotation of the insert (33) around the cover part (220)) can be restricted by the engagement of the cover part (220) with the first and second leg parts (331, 332). Therefore, the supporting performance of the side part (31) to the occupant can be improved. 本发明的课题在于提供一种能够提高侧部对乘员的支撑性的车辆用座椅及车辆。由于覆盖部(220)(侧框架(20))被嵌入件(33)的第一腿部(331)和第二腿部(332)从左右夹着，因此即使在从乘员施加于座垫衬垫(3)的侧部(31)的载荷比较大的情况下，也能够通过覆盖部(220)与第一、第二腿部(331、332)的啮合来限制侧部(31)朝向左右方向外侧的变形(嵌入件(33)绕覆盖部(220)的旋转)。因此，能够提高侧部(31)对乘员的支撑性。