Abbreviations beginning with a

ATTIArizona Technical Testing Institute
Governmental » Institutes

ATTIAddicted To The Internet
Internet

ATTIAutomotive Testing Technology International
Miscellaneous » Automotive

ATTIAlaska Transition Training Initiative
Regional » Alaska

ATTIAAustralian Tea Tree Industry Association (Kingscliff, New South Wales, Australia)
Academic & Science

ATTIAA Thousand Thanks in Advance
Miscellaneous

ATTICAlternative Treatment Technology Information Center
Computing » Technology

ATTICActive Top Tenth Inactive Compressed
Miscellaneous » Unclassified

ATTICAdvising, Tutoring, Testing/Disabilities, International Student Center (Southern Polytechnic State University; Georgia)
Miscellaneous

AtticAll Teens Together in Christ
Miscellaneous

ATTICAll That Tour in Corea (Korean travel agency)
Miscellaneous

ATTICAll Things Through and In Christ
Miscellaneous

ATTICAlternative Treatment Technology Information Center (US EPA National Risk Management Research Laboratory)
Miscellaneous

ATTICArchived Term That Isn't Certified (Acronym Attic)
Miscellaneous

ATTICArmy Test and Training Instrumentation Conference (US Army)
Miscellaneous

ATTICAssistive Technology, Training and Information Center, Inc. (Vincennes, Indiana)
Miscellaneous

ATTICAssociation of Trinidad and Tobago Insurance Companies
Miscellaneous