A sliding bearing having an annular shape and comprising: an upper case ; a lower case rotatably combined with the upper case and forming an annular space with the upper case ; and a center plate disposed in the annular space , wherein the upper case includes: an upper base which has an annular shape and which is capable of supporting a thrust load; and an inner circumferential portion which protrudes along an axial direction (O) from an inner circumferential edge (2B1) of the upper base and which has a cylindrical shape, the center plate is provided with: an annular thrust portion which is disposed between the upper base of the upper case and the lower case and which includes a thrust sliding surface slidable relative to the upper base ; and a cylindrical radial portion which protrudes along the axial direction (O) from an inner circumferential edge of the thrust portion, which is disposed between the inner circumferential portion of the upper case and the lower case , and which includes a radial sliding surface slidable relative to the inner circumferential portion of the upper case , and a portion of the thrust portion that forms the thrust sliding surface is formed from a resin material having higher elasticity than a portion of the radial portion that forms the radial sliding surface ; characterized in that the center plate is provided with: a plate body which includes: an annular thrust body portion which forms the thrust portion and which is disposed between the upper base of the upper case and the lower case ; and the radial portion which protrudes along the axial direction (O) from an inner circumferential edge of the thrust body portion, which is disposed between the inner circumferential portion of the upper case and the lower case , and which includes the radial sliding surface slidable relative to the inner circumferential portion of the upper case ; and a thrust plate which forms the thrust portion, which is provided on the thrust body portion , and which includes the thrust sliding surface slidable relative to the upper base, and the thrust plate which forms the thrust portion and which includes the thrust sliding surface is formed from a thermoplastic elastomer, and the thermoplastic elastomer has higher elasticity than a thermoplastic resin forming the radial sliding surface of the radial portion . a plate body which includes: an annular thrust body portion which forms the thrust portion and which is disposed between the upper base of the upper case and the lower case ; and the radial portion which protrudes along the axial direction (O) from an inner circumferential edge of the thrust body portion, which is disposed between the inner circumferential portion of the upper case and the lower case , and which includes the radial sliding surface slidable relative to the inner circumferential portion of the upper case ; and a thrust plate which forms the thrust portion, which is provided on the thrust body portion , and which includes the thrust sliding surface slidable relative to the upper base, and the thrust plate which forms the thrust portion and which includes the thrust sliding surface is formed from a thermoplastic elastomer, and the thermoplastic elastomer has higher elasticity than a thermoplastic resin forming the radial sliding surface of the radial portion . <EOS>