An optical-fiber connector includes a handle, a sleeve member, and connecting housings each including a base body and an elastic arm. Each elastic arm includes engaging blocks protruding from the elastic arm and a slidable groove on the corresponding base body. The slidable grooves face each other. The handle includes a handle body between the elastic arms and a handle member extending from the handle body. Two slidable blocks are at two sides of the handle body and respectively inserted into the slidable grooves, and two protruding blocks are at two sides of the handle member. The sleeve member is fitted over the handle member. First and second engaging grooves are on a wall surface of the sleeve member, and the first and second engaging grooves are on different positions of the wall surface of the sleeve member. Accordingly, the length of the handle is adjustable.