Capitalizing abbreviations

Capitalize abbreviations for departments and agencies of government, other organizations, and corporations; capitalize the call letters of radio and television stations.

EPA, FBI, OPEC, IBM, WCRB, KNBC-TV

Note that no periods are used.

Initialisms are abbreviations formed from the first letters of words (MLB, NIH); acronyms are initialisms that can be pronounced as words (NATO, AIDS).

Exercises:

Capitalization 1

Capitalization 2

Related topic:

Abbreviating organization names