Risa Control was a facility on Risa responsible for coordinating incoming and outcoming spaceships and communications.
In 2367, when Geordi La Forge's Type 15 shuttlepod Onizuka was being caught in the tractor beam of a Romulan warbird, he tried to send a distress signal to Risa Control but couldn't reach anybody, as the Romulans had jammed the frequencies. (TNG: "The Mind's Eye")