Tau Cygna V inhabitants

Named

Unnamed

Armed colonists

These four armed colonists guarded the aqueduct of the colony. They were attacked by Lieutenant Commander Data who shot them down with his phaser, to strengthen his position. They recovered after they were shot and left the planet with the other colonists. (TNG: "The Ensigns of Command")

All four colonists were played by stunt performers, who received no credit for their appearance.

Colonists

These colonists lived in the settlement on Tau Cygna V which was visited by Lieutenant Commander Data in 2366. They've gathered for a public meeting held on a free place and witnessed the discussion between Data and their leader Gosheven. Following the destruction of the aqueduct by Data they all left the planet which was then colonized by the Sheliak. (TNG: "The Ensigns of Command")

Gosheven's aides

These two colonists assisted Gosheven in an inspection of the aqueduct system when Lieutenant Commander Data told Gosheven about the Sheliak and the resettlement of the colony. (TNG: "The Ensigns of Command")

Both actors were played by unknown actors, who received no credit for their appearance.
The second colonist previously appeared in Star Trek II: The Wrath of Khan and Star Trek III: The Search for Spock as a crewmember of the USS Enterprise-A.