- ACTT stands for Actors College of Theatre and Television (Australia)
- ACTT stands for Aircraft Total Time (aviation)
- ACTT stands for Assertive Community Treatment Teams
- ACTT stands for Association of Cinematograph, Television and Allied Technicians (UK)
- ACTT stands for Accreditation Council of Trinidad and Tobago (Port-of-Spain, Trinidad, WI)
- ACTT stands for Arkansas Cycle Touring and Training
- ACTT stands for Association of Classroom Teacher Testers (Montecito, CA)
- ACTT stands for Advanced Communications Timekeeping Technology
- ACTT stands for Advanced Centers for Technology and Training
- ACTT stands for ASEAN Communication Team for Tourism
- ACTT stands for Affordable Computers and Technology for Tanzania (Moshi, Tanzania)
- ACTT stands for Air and Command Tactical Trainers
- ACTT stands for Association of Cinematography and Television Technicians
ACTT