| 1HM | One Holy Man | |
| 2CV | 2nd Commandment Violation | |
| 3D | The Third Day | |
| 3VM | 3 Vital Ministries | |
| 5E | Esh Esh El Beh Sheh | |
| 666 | Hell or the symbol of the devil | |
| 770 | 770 Eastern Parkway The Chabad-Lubavitch movement headquarters | |
| A.D. | Christian era (anno Domini [Lat.]) | |
| A99ID | And Ninety-Nine Inside Dictators | |
| AA | Anti Apostle | |
| AA | ArchAngel | |
| AA | Allahu Akbar = God is Great in Arabic | |
| AABC | Accrediting Association of Bible Colleges | |
| AABC | Asian American Baptist Church | |
| AABF | All Africa Baptist Fellowship | |
| AABS | Australasian Association of Buddhist Studies | |
| AAC | American Anglican Council | |
| AAC | Alabama Alliance of Churches | |
| AAC | All Angel Channel | |
| AACA | Athletic Association of Catholic Academies | |
| AACC | American Association For Christian Counselors | |
| AACC | American Association of Christian Counselors | |
| AACC | All Africa Conference of Churches | |
| AACC | Asian American Christian Collaborative | |
| AACCB | Anglophone Africa Catholic Community Brussels | |
