A young yeoman assigned to Captain Kirk on the USS Enterprise in 2265, whom he absent-mindedly addressed as Jones as the ship approached the barrier at the edge of the galaxy.
Yeoman Smith is Captain Kirk's yeoman in the second pilot, Where No Man Has Gone Before, set in 2265.
She reports to the bridge with the department heads as the Enterprise prepares to leave the galaxy. Kirk gets her name wrong, calling her Jones, and she quietly corrects him. Gary Mitchell, at the helm, makes his interest in her plain.
When the ship strikes the galactic barrier, Smith and Mitchell grip each other's hands as the bridge is swept by energy discharges; he is struck down moments later and begins his transformation. She stays at her post through the emergency and is not seen in any later episode, the yeoman's role passing to Janice Rand once the series proper began. She was played by Andrea Dromm.