List of famous & important full forms

0-9
2G / 3G / 4G / 5G,

A
ABSA, AIDS, ALM, ALU, APEC, ASEAN, ATM

B
BARC, BIFR, BIT, BITS,

C
CAD, CAS, CBS, CeNS, CFL, CNG, CNN, CTBT

D
DOS, DPAP, DRDO, DTP, DVD,

E
ECB, ECS, EMI, EVM

F
FEMA, FIR, FM

G
GATT, GIS, GM, GSLV, GSM

H
HTML, HTTP/HTTPs, HUDCO

I
IC, ICOM, IFD, ILO, IMD, IND, Interpol, IRA, IRDA, ISDN, ISI, ISRO, IWD

J

K
KB

L
LAF, LAN, LASER, LCD, LGBT, LNG, LTTE

M
MCA, MICR, MODEM, MRI

N
NABARD, NAEP, NAFTA, NASA, NAV, NBFC, NCERT, NIS, NGO, NPA, NSG

O
OCR, OMR, OPCW, OPEC, OTEC

P
PAN, PIL, PPP, PSLV

Q

R
RAM, RBI, RDX, ROM, RPF, RTGS

S
SAPTA, SARS, SEBI, SEZ, SDR, SIDBI, SIM, SIMI, SMS, STD, STPP, SW (in radio)

T
TRAI

U
UNDP

V
VAT

W
WAN, WLL, WTO, WWW

X

Y

Z