Holly Gribbs (Chandra West, season 1); a CSI Level I.
Michael Keppler (Liev Schreiber, season 7); a CSI Level III Assistant Supervisor.
Ronnie Lake (Jessica Lucas, season 8); a CSI Level I.
Sean Yeager (Matthew Davis, season 14); a CSI Level III.
Dawn Banks (Sherry Stringfield, season 14); a CSI Level III.
Mandy Webster (Sheeri Rappaport, seasons 1–2; 6–12); a fingerprint technician.
Mia Dickerson (Aisha Tyler, season 5); a DNA technician.
Archie Johnson (Archie Kao), seasons 2–12); an A/V technician.
Ronnie Litre (Eric Stonestreet, seasons 1–5); a Q.D. technician.
Charlotte Meridian (Susan Gibney, seasons 1–2); a Fingerprint technician.
Bobby Dawson (Gerald McCullouch, seasons 1–10); a ballistics expert.
Judie Tremont (Victoria Prescott, seasons 3–8); a receptionist.
Jenna Williams (Judith Scott, season 1); a Medical Examiner.
Teri Miller (Pamela Gidley, seasons 1–3); a forensic anthropologist.
Rambar (Tony Amendola, seasons 1, 6); a forensic document examiner.
Conrad Ecklie (Marc Vann, seasons 1–2, 5–16); the Clark County Sheriff.
Sherry Liston (Barbara Eve Harris, season 12); the Clark County Sheriff.
Rory Atwater (Xander Berkeley, seasons 4–5); the Clark County Sheriff.
Brian Mobley (Glenn Morshower, seasons 1–2); the Clark County Sheriff.