Niner could refer to:
- CT-19-7409, a clone trooper sergeant stationed in the Rishi system, nicknamed "O'Niner."
- GT-9R, a droid referred to as "Niner" by his masters Tirog and Thannik
- Niner, a clone trooper who participated in the mission to Vassek's third moon.
- RC-1309, the clone commando who led Omega Squad, who was also nicknamed "Niner".
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