Abbreviations beginning with r

RRTARailroad Retirement Tax Act (IRS; similar to Social Security)
Governmental

RRTARapid Response for Technical Assistance (US DHHS)
Governmental

RRTARed Rose Transit Authority
Governmental » Authorities

RRTARed Rose Transit Authority
Miscellaneous

RRTARolling River Teachers' Association (Manitoba, Canada)
Miscellaneous

RRTAGRadio Regulatory Technical Advisory Group
Community

RRTCRegional Road Transport Committee (Southeast European Cooperative Initiative)
Academic & Science

RRTCRehabilitation Research and Training Center
Academic & Science

RRTCRice Research and Training Centre (Egypt)
Academic & Science

RRTCRole of Religions in the Turkic Culture
Community » Conferences

RRTCRed River Technology Center
Computing » Technology

RRTCRoad Running Technical Council
Governmental » US Government

RRTCRehabilitation Research and Training Centers
Medical » Rehabilitation

RRTCRed River Technology Center
Miscellaneous » Unclassified

RRTCRed River Trade Council
Miscellaneous

RRTCRehabilitation Research and Training Centers
Miscellaneous » Unclassified

RRTCRoad Running Technical Council (USA Track and Field)
Miscellaneous

RRTCRochester Rail Transit Committee
Miscellaneous

RRTDResearch Reference and Training Division
Academic & Science » Research