Third officer

A third officer is an officer of a starship that is fourth in line of command of the vessel after the captain, first officer, and second officer. In Starfleet, the position is generally filled by a lieutenant commander or lieutenant. The security chief, tactical officer, or chief engineer is sometimes given this position. As with the second officer, the third officer was a department head first and third officer second.

Known third officers

 * Lieutenant Hikaru Sulu
 * USS Enterprise (NCC-1701)
 * Lieutenant junior grade / Ensign Tom Paris
 * USS Voyager


 * Dahar master Kor
 * Lieutenant Malcolm Reed
 * Lieutenant Malcolm Reed


 * Lieutenant Commander Jadzia Dax
 * Deep Space 9 / USS Defiant (2370)


 * Lieutenant Julian Bashir
 * Deep Space 9 / USS Defiant (2370) / USS Sao Paulo


 * Lieutenant Tasha Yar
 * USS Enterprise (NCC-1701-D)


 * Lieutenant Worf
 * USS Enterprise (NCC-1701-D)


 * Commander Deanna Troi
 * USS Enterprise (NCC-1701-E)