Circle Three Designs is a custom road case manufacturer based in Raritan, New Jersey, with a second facility at the Rock Lititz production campus in Lititz, Pennsylvania. The company builds protective and touring cases for the music, aerospace, medical, and pro sports industries, with all products made in the USA.

On the music side, the catalog centers on stage- and studio-ready storage for working musicians and techs. Notable product lines include the CPAC Guitar Vault (offered in multi-space configurations such as the 3-space and 8-space versions, often with internal LED lighting), pedalboard cases designed to sit on a keyboard stand with a removable lid, Fly Vaults for air travel, GT (Guitar-Tech) Workstations built around Pelican Air enclosures, and a range of workboxes, racks, and keyboard cases.

The brand has built a reputation in the touring and backline community for heavy-duty, road-grade construction and custom Pelican foam inserts, and its work spans both club-level rigs and large-scale production environments served out of the Rock Lititz facility.

Circle Three has 3 products cataloged on Equipboard, including Bags, Cases & Covers and Studio Desks and Workstations. Their gear is featured by 7 artists, with the strongest followings in Rock and Metal. Notable users include Ryan "Fluff" Bruce, Ian Roberts, and Josh WIldhorn.