Treir
- Full Name: Treir
- Species: Orion
- Gender: Female
- By April 2376: Slave under possession of the Orion Syndicate (DS9 Novel: Demons of Air and Darkness)
- April 24, 2376: Emancipated during Starfleet operation by Ro Laren (DS9 Novel: Demons of Air and Darkness)
- Began residence on Deep Space 9 as dabo girl, Quark's bar (DS9 Novel: Demons of Air and Darkness)
- Mid-May 2376: Night manager, Quark's Bar; Deep Space 9 (DS9 Novel: Mission Gamma: Twilight, et al.)