English abbreviations from trl to trp
- TRL (Technology readiness level)
- TRM (Jacqueline Cochran Regional Airport)
- TRN (Turin International Airport)
- TRNG (Training)
- TRNS (Transfer Student)
- TRNZ (Touch Rugby New Zealand)
- TRO (Tactical Reconnaissance Office)
- TROA (The Reserve Officers Association)
- TROFF (Trace Off)
- TROG (Test For Reception Of Grammar)
- TROLL (Teacher Reviewers Of On Line Learning)
- TRON (Trace On)
- TROPO (Troposcatter)
- TROSCOM (Troop Support Command)
- TROT (Tarheel Riders On The Trails)
- TROU (The Rest Of Us)
- Troy (Murgatroid)
- TRP (Mode S transponder)
- T.R.P. (Très Révérend Père ("Very Reverend Father"))
