Species: Human
Current Rank: Commander
Ranks Held: Ensign/Lt./Commander, Navigator/Helmsman, Tactical Officer, & Security Chief, USS Enterprise; Navigator/Helmsman, USS Enterprise-A; Security Chief & Tactical Executive Officer, USS Reliant
Family: grandfather, Dimitri Chekov; father, Andrei Dimitrievich Chekov
Appearances: TOS: S2 & S3 (regular); Star Trek: The Motion Picture; Star Trek II: The Wrath of Khan; Star Trek III: The Search for Spock; Star Trek IV: The Voyage Home; Star Trek V: The Final Frontier; Star Trek VI: The Undiscovered Country; Star Trek Generations
Played By: Walter Koenig