Abstract: An optical wave guide splice box which can be installed in a control box or the like and which receives optical wave guide splicing cassettes. Incoming optical wave guide cables are split into optical wave guide fiber bundles and/or individual optical wave guide fibers and are connected in optical wave guide harnesses with outgoing individual optical wave guide fibers. At least a portion of the outgoing individual optical wave guide fibers are guided and connected to optical wave guide connectors in a front panel which closes off the optical wave guide splice box. Shunting, splicing and distribution of the optical wave guide exterior cables, the optical wave guide fiber bundles and the individual optical wave guide fibers is considerably easier, even in an optical wave guide splice box installed in a control box or the like.