Corvallen freighters were types of warp-capable freighters utilized by Corvallen mercenaries during the 24th century. One type they used was the old-style Antares-class freighter.
In 2369, the IRW Khazara was scheduled to rendezvous with a Corvallen freighter in the Kaleb sector to transfer cargo that would further be transported to the Federation planet Draken IV. The Khazara would later destroy the freighter, forcing it to find an alternate means of transferring its cargo to Federation space. (TNG: "Face of the Enemy")
A Corvallen freighter visited Deep Space 9 in 2375. Upon its departure, Laas shadowed the freighter to mask his escape. (DS9: "Chimera")