|Main Character: Miami|
|Name||Francis "Frank" Tripp|
|Birth Date||June 7, 1950|
|Family|| Ex-Wife, Melissa|
|Specialty||Warrants, Background checks, Paper Trail|
|Portrayed By||Rex Linn|
|First Appearance||Seasons 1-10|
Frank Tripp is from Texas. He has a gruff appreciation for the capabilities of the CSIs and their excellent results. He has a good working relationship with all the CSIs, particularly Calleigh. He is divorced, with three kids "Dispo Day". He often uses sarcasm and shows disbelief at “modern terms” such as the cougar and the cub. After passing the Sergeant's Exam, Tripp was required to spend some time in uniform on a patrol rotation, but soon returned to the homicide unit and plainclothes duty "Guerillas in the Mist".