A bicycle shifter is configured to ensure that the position where a main shifter body is attached to a bicycle can be easily varied. The bicycle shifter basically has a mounting bracket, a main shifter body and a fixing mechanism. The mounting bracket is preferably configured be fixed to a handlebar of a bicycle. The main shifter body is mounted on the mounting bracket and has a shifter mechanism in the interior. The fixing mechanism is a mechanism whereby the main shifter body can be fixed in place on the mounting bracket at an arbitrary attachment position between a first position and a second position.