Abstract: A sleeve for an optical fiber connector and fabricating method therefor for detachably connecting optical fibers mutually by gripping with an elastic restoring force plug ferrules at respective ends of optical fibers in a mutually matched state, the sleeve being made of resilient materials such as phosphor bronze, beryllium copper, high carbon steel and stainless steel, in a tubular form with an approximately C-shaped cross-section having a slit over its entire length, the ferrules being mutually inserted into both ends of the sleeve in an axial direction, wherein the slit is formed along the entire length of the sleeve and the tubular sleeve is formed by a process other than cutting or drilling.