A dust cap for a fiber optic connector is disclosed. The fiber optic connector includes a connector body having a first end and second end and a ferrule positioned at the first end of the connector body. The ferrule holds an optical fiber having an end face. The dust cap includes a housing adapted to engage the first end of the connector body to releasably couple the dust cap to the fiber optic connector and protect the end face of the optical fiber. Additionally, or alternatively, the dust cap may be configured to releasably engage an adjacent dust cap to join at least two dust caps together, and may include one or more mounting members for releasably coupling the dust cap to a support structure to thereby support the dust cap and any fiber optic connector releasably coupled to the dust cap from the support structure.