A shaft coupling comprising: a drive hub that is coupled to a drive shaft to rotate integrally with the drive shaft; a driven hub that is coupled to a driven shaft to rotate integrally with the driven shaft; a rotation transmission portion (60, 80, 81, 83, 90, 91, 93) that transmits rotation between the drive hub and the driven hub; and a dynamic vibration absorber (20, 30) integrally coupled to a section of at least one of the drive hub and the driven hub, the section being an uninvolved section (42, 52) that is not involved in a torsional stiffness of the whole shaft coupling, the at least one of the drive hub and the driven hub is shaped like a column and includes a shaft hole (44, 54) in which the drive shaft or the driven shaft is fitted and a pair of end faces (42, 52) in the axial direction, the uninvolved section (42, 52) is one of the end faces (42, 52), the dynamic vibration absorber (20, 30) includes an inertial body (23, 33), a mounting member (21, 31) that is secured to the one of the end faces (42, 52) to mount the inertial body (23, 33) on the one of the end faces (42, 52), and at least one elastic member (22, 32) that is arranged between the inertial body (23, 33) and the mounting member (21, 31) to support the inertial body (23, 33), wherein the inertial body (23, 33), the mounting member (21, 31), and the elastic member (22, 32) are arranged in a non-contact manner with respect to the drive shaft and the driven shaft, wherein the inertial body (23, 33) includes a cover (29, 39) that covers an outer circumferential surface of the hub on which the inertial body (23, 33) is mounted, a supported portion (28, 38) that is supported by the elastic member (22, 32) and is integrally coupled to the cover (29, 39), characterized by that the mounting member (21, 31) is secured to a first face of the elastic member (22, 32), and an inner surface of the supported portion (28, 38) is secured to a second face of the elastic member (22, 32). a drive hub that is coupled to a drive shaft to rotate integrally with the drive shaft; a driven hub that is coupled to a driven shaft to rotate integrally with the driven shaft; a rotation transmission portion (60, 80, 81, 83, 90, 91, 93) that transmits rotation between the drive hub and the driven hub; and a dynamic vibration absorber (20, 30) integrally coupled to a section of at least one of the drive hub and the driven hub, the section being an uninvolved section (42, 52) that is not involved in a torsional stiffness of the whole shaft coupling, the at least one of the drive hub and the driven hub is shaped like a column and includes a shaft hole (44, 54) in which the drive shaft or the driven shaft is fitted and a pair of end faces (42, 52) in the axial direction, the uninvolved section (42, 52) is one of the end faces (42, 52), the dynamic vibration absorber (20, 30) includes an inertial body (23, 33), a mounting member (21, 31) that is secured to the one of the end faces (42, 52) to mount the inertial body (23, 33) on the one of the end faces (42, 52), and at least one elastic member (22, 32) that is arranged between the inertial body (23, 33) an inertial body (23, 33), a mounting member (21, 31) that is secured to the one of the end faces (42, 52) to mount the inertial body (23, 33) on the one of the end faces (42, 52), and at least one elastic member (22, 32) that is arranged between the inertial body (23, 33) and the mounting member (21, 31) to support the inertial body (23, 33), wherein the inertial body (23, 33), the mounting member (21, 31), and the elastic member (22, 32) are arranged in a non-contact manner with respect to the drive shaft and the driven shaft, wherein the inertial body (23, 33) includes a cover (29, 39) that covers an outer circumferential surface of the hub on which the inertial body (23, 33) is mounted, a supported portion (28, 38) that is supported by the elastic member (22, 32) and is integrally coupled to the cover (29, 39), a cover (29, 39) that covers an outer circumferential surface of the hub on which the inertial body (23, 33) is mounted, a supported portion (28, 38) that is supported by the elastic member (22, 32) and is integrally coupled to the cover (29, 39), characterized by that the mounting member (21, 31) is secured to a first face of the elastic member (22, 32), and an inner surface of the supported portion (28, 38) is secured to a second face of the elastic member (22, 32).