The full form of ABC is American Broadcasting Company.
A- American
B - Broadcasting
C - Company
About ABC
The American Broadcasting Company is an American commercial broadcast television network that is a flagship property of Disney–ABC Television Group, a subsidiary of the Disney Media Networks division of The Walt Disney Company.
Reference:
https://en.m.wikipedia.org/wiki/American_Broadcasting_Company
What is full form provides latest full form of English Abbreviations.