An operation control apparatus and a bicycle display device are provided that are configured for improving the usability. The operation control apparatus includes a controller, which is configured to operate a bicycle electronic apparatus that can be mounted on a bicycle. The operation control apparatus is configured to cause a predetermined control target to execute a predetermined operation of the bicycle electronic apparatus according to an operation of an operating unit inputted to the controller. The controller is configured to set at least one of the predetermined control target and the predetermined operation, according to at least one of the configuration, the type and the function of the bicycle electronic apparatus.