Abbreviations beginning with a

ACT-RAdaptive Character of Thought- Rational
Academic & Science

ACT-RAir Combat Training - Rangeless (Cubic Defense Systems)
Governmental

ACT-RAdaptive Control of Thought-Rational (cognitive theory)
Miscellaneous

ACTRAAlliance of Canadian Television and Radio Artists
Community » Unions

ACTRAAmerican Cowboy Team Roping Association
Community » Associations

ACTRAAmerican Cowboys Team Roping Association
Community » Associations

ACTRAAtlantic Canada Trail Riding Association
Community » Non-Profit Organizations

ACTRAArizona Cyber Threat Response Alliance
Computing » Cyber & Security

ACTRAArizona Cyber Threat Response Alliance
Governmental » Alliances

ACTRAAsociacion Concesionarios Toyota Republica Argentina
Miscellaneous » Automotive

ACTRAAtlantic Canada Trail Riding Association
Sports » Riding

ACTRECAdvanced Centre for Treatment, Research and Education in Cancer (India)
Miscellaneous

ActRIIBActivin A Receptor, Type IIB
Academic & Science

ACTRIMSAmericas Committee for Treatment and Research in Multiple Sclerosis (Canada and US)
Academic & Science

ACTRMAssociation Canadienne des Technologues en Radiation Médicale
Miscellaneous

ACTRPAssociation of Consulting Town and Regional Planners (South Africa)
Academic & Science

ACTRPAdvisory Committee on Tenure-Related Processes
Miscellaneous

ACTSAdvanced Communications Technology Satellite
Academic & Science » Astronomy