Starfleet
Spacer 3rd, 2nd and 1st Class
Petty Officer
Chief Petty Officer
Master Chief Petty Officer
Master Chief Petty Officer 1st Class
Warrant Officer
Chief Warrant Officer
Midshipman
Ensign
Lieutenant JG
Lieutenant SG
Lieutenant Commander
Commander
Captain
Fleet Captain (discontinued in 2307)
Commodore (discontinued in 2307)
Rear Admiral
Vice Admiral (Lower and Upper Halves established in 2308)
Admiral
Fleet Admiral
Klingon Imperial Navy/Klingon Defense Force
Recruit
Recruit 2nd Class
Recruit 1st Class
Petty Officer
Petty Officer 1st Class
Cadet
Ensign
Lieutenant JG
Lieutenant SG
Lieutenant Commander
Commander
Captain
Commodore
Admiral
Thought Admiral
Romulan Star Navy
Spacer
Subaltern
Equitorium
Centurian
Ante-Tribune
Tribune
Sub-Commander
Commander
Gorn Alliance
Recruit
Junior Crewman
Senior Crewman
Exemplary Crewman
Corporal
Junior Sergeant
Senior Sergeant
Sergeant Major
Cadet
Ensign
Lieutenant
Exemplary Lieutenant
Commander JG
Commander SG
Captain JG
Captain SG
Orion Pirates
Those Guys, there, filling positions on the Crew
Lieutenant
First Mate
Captain
Kzinti Hegemony
Recruit
Spacer (5 Grades)
Petty Officer (5 Grades)
Cadet
Lieutenant (5 Grades)
Commander (5 Grades)
Captain (5 Grades)
Lyran Star Navy
Recruit
Spacer
Petty Officer
Chief Petty OFficer
Warrant Officer
Chief Warrant Officer
Cadet
Ensign
Lieutenant JG
Lieutenant SG
Lieutenant Commander
Commander
Captain
Commodore
Admiral
Fleet Commander
Hydran Royal Navy
Recruit
Spacer
Petty Officer
Chief Petty Officer
Cadet
Subaltern
Lieutenant JG
Lieutenant SG
Lieutenant Commander
Commander
Captain
Commodore
Rear Admiral
Vice Admiral
Admiral
Lord Admiral
Fleet Admiral
Interstellar Concordium
Recruit
Spacer
Exemplary Spacer
Petty Officer
Chief Petty Officer
Chief Petty Officer 1st Class
Warrant Officer
Senior Warrant Officer
Chief Warrant Officer
Cadet
Ensign JG
Ensign SG
Lieutenant JG
Lieutenant SG
Lieutenant Commander
Commander
Captain
Fleet Captain
Commodore
Rear Admiral
Vice Admiral
Admiral
Star Admiral
Peace Admiral
Grand Admiral
Hassan Alliance
Recruit
Spacer
Petty Officer
Machinery Chief
Master Chief Petty Officer
Cadet
Ensign
Lieutenant JG
Lieutenant SG
Lieutenant Commander
Commander
Captain
Fleet Baron
Admiral
Ferengi Alliance
Apprentice
Garad
Derkon
Lathe
Ersmon
Daimon
Merchant Prince
Cardassian Union
Recruit
Spacer
Technician
Cadet
Subaltern
Bayul
Gatara
Glinn
Gul
Legate
Bajorian Militia
Recruit
Ensign
Lieutenant JG
Lieutenant SG
Captain
Major
Colonel