| S.No. | Short Form | Full Form | Country | Popularity |
| 1 |
YFC |
Youth For Christ |
Worldwide |
|
| 2 |
ALCOA |
Active Living Coalition for Older Adults |
Canada |
|
| 3 |
ESR |
Earlham School of Religion |
United States |
|
| 4 |
IFCA |
Independent Fundamental Churches of America |
United States |
|
| 5 |
CUL |
Catholics United for Life |
United States |
|
| 6 |
CNBC |
Congress of National Black Churches |
United States |
|
| 7 |
ADA |
American Diabetes Association |
United States |
|
| 8 |
ADA |
Australian Dental Association |
Australia |
|
| 9 |
SIO |
Students Islamic Organisation |
India |
|
| 10 |
VLCC |
Victorious Life Christian Church |
Worldwide |
|
| 11 |
GIPL |
Georgia Interfaith Power & Light |
United States |
|
| 12 |
CBS |
Canadian Blood Services |
Canada |
|
| 13 |
KCYM |
Kerala Catholic Youth Movement |
India |
|
| 14 |
KCBC |
Kerala Catholic Bishops Council |
India |
|
| 15 |
ADF |
Ár Ndraíocht Féin (Our Own Druidism) |
Worldwide |
|
| 16 |
FOR |
Fellowship of Reconciliation |
Worldwide |
|
| 17 |
SPF |
Society for the Propagation of the Faith |
Worldwide |
|
| 18 |
LBT |
Lutheran Bible Translators |
United States |
|
| 19 |
ITC |
International Theological Commission |
Worldwide |
|
| 20 |
RFC |
Racers for Christ |
Worldwide |
|
| 21 |
APK |
Afrikaanse Protestantse Kerk ( Afrikaans Protestant Church) |
South Africa |
|
| 22 |
CCC |
Canadian Council of Churches |
Canada |
|
| 23 |
FCA |
Fellowship of Christian Athletes |
United States |
|
| 24 |
CAP |
Christian Appalachian Project |
United States |
|
| 25 |
SSF |
Sunni Students Federation |
India |
|
| 26 |
MEP |
Société des Missions étrangères de Paris French [Society of Foreign Missions of Paris] |
Worldwide |
|
| 27 |
ISKCON |
International Society for Krishna Consciousness |
Worldwide |
|
| 28 |
AIM |
Africa Inland Mission |
Worldwide |
|
| 29 |
BTTS |
Buddhist Text Translation Society |
Worldwide |
|
| 30 |
BPC |
Bible Presbyterian Church |
United States |
|
| 31 |
WLS |
West London Synagogue |
United Kingdom |
|
| 32 |
APTS |
Asia Pacific Theological Seminary |
Worldwide |
|
| 33 |
PPC |
Parish Pastoral Council |
Worldwide |
|
| 34 |
AUA |
American Unitarian Association |
United States |
|
| 35 |
TBSP |
Black Star Project |
United States |
|
| 36 |
LT |
Life Teen |
United States |
|
| 37 |
ME |
Methodist Episcopal |
United States |
|
| 38 |
SVD |
Societas Verbi Divini (Society of the Divine Word) |
Worldwide |
|
| 39 |
IBPS |
International Buddhist Progress Society |
Worldwide |
|
| 40 |
BK |
Brahma Kumaris |
India |
|
| 41 |
NACA |
National Association for Clean Air |
South Africa |
|
| 42 |
BCM |
Baptist Collegiate Ministries |
United States |
|
| 43 |
PGI |
Persekutuan Gereja-gereja di Indonesia (Communion of Churches in Indonesia) |
Indonesia |
|
| 44 |
MCG |
Muslim Consumer Group |
United States |
|
| 45 |
BHIM |
Bob Harman International Ministries |
United States |
|
| 46 |
CEEP |
Consortium of Endowed Episcopal Parishes |
United States |
|
| 47 |
AECC |
American Evangelical Christian Churches |
United States |
|
| 48 |
IAS |
International Association of Sufism |
United States |
|
| 49 |
LCM |
London City Mission |
United Kingdom |
|
| 50 |
SSC |
Sangha Supreme Council |
Thailand |
|
| 51 |
CBEC |
Community Business and Environment Centre |
New Zealand |
|