Yeoman Tankris was a female Human Starfleet enlisted operations division crewman who served on the USS Enterprise during the mid-23rd century.
In 2267, she was the clerk who recorded testimony during a hearing into Montgomery Scott's alleged involvement in the murders of three women on the planet Argelius II.
During Redjac's final manifestation within Hengist, Tankris was briefly taken hostage and threatened with death by the entity, but she was not afraid, having been tranquilized earlier against the emotion Redjac fed itself with. After a brief moment, Hengist let Tankris go and threw her into Doctor McCoy's arms. (TOS: "Wolf in the Fold")
Tankris was played by Judy McConnell.