A clutch release bearing apparatus having a structure which resists entry of muddy water or the like by an inner peripheral surface of an inner ring of a clutch release bearing and part of a cover member, thereby achieving improvement of a muddy water resistant property is provided. A clutch release bearing (30) and a cover member (50) configured to cover and hold an outer peripheral surface of an outer ring (31) thereof are provided. The cover member (50) includes a radially outside flange portion (61), an intermediate cylinder portion (63), a bent portion (64), a radially inside flange portion (65). An extending cylinder portion (36) is formed at the other end of inner ring (35), and a flange portion (37) configured to press a diaphragm spring (40) is formed at an extending end of the extending cylinder portion (36) so as to project radially outward. An inner peripheral surface of the inner ring (35) is formed with a cylindrical peripheral wall surface (90), a guiding surface (91) increased gradually in diameter from an end edge of the cylindrical peripheral wall surface (90) toward the extending cylinder portion (36) continuously, so that the muddy water or the like flowing from the side of the radially inside flange portion (65) along the bent portion (64) is guided toward the distal end side of the extending cylinder portion (36) by the guiding surface (91).