PROBLEM TO BE SOLVED: To provide a catheter connector removably connected to the base end of a catheter, the connector enabling gradual connection through easy operation similarly to a one-touch connector.SOLUTION: A catheter connector includes: a cylindrical clamp body 1 containing a fastening ring 4 of rubber elasticity； a clamp cap 2 fitted to the clamp body with the fastening ring held together with the clamp body； and a clamp lever 3 fitted to a rotary shaft 14 provided on the clamp body to move the clamp cap in the axial direction of the clamp body. The catheter includes locking means which can temporarily stop movement in the midway of rotation when the clamp lever is rotated and the fastening ring is compressed to connect the catheter. When the clamp cap is pushed in by a pressing part 32 of the clamp lever, contact parts of the clamp cap pressed by the pressing part are a first contact surface and a second contact surface and the space between the contact surfaces to thereby constitute the locking means.
