A connector cover may be used to protect a connector from exposure to environmental contaminants and physical abuse. In some examples, the connector cover includes a housing defining an opening that is configured to receive a connector positioned on the end of a transmission line. The housing may contain a complementary connector for mating with the transmission line connector. The connector cover may also include first and second doors positioned to cover different portions of the opening. In use, the doors may bias together when the connector is not inserted into the housing so as to keep the opening closed. Upon inserting the connector into the opening, the connector cover doors may move apart in response to the connector physically contacting the doors. This may allow a user to insert the connector into the connector cover without using their hands to touch the doors, which may transfer contaminants.