Ending a Sentence with an Abbreviation

Does the period that ends the abbreviation also end the sentence?

Mignon Fogarty
1-minute read

Ending a Sentence with an Abbreviation

When you end a sentence with an abbreviation, you don't need an extra period.

  • Apple Computer, Inc. became Apple, Inc.. (wrong)
  • Apple Computer, Inc. became Apple, Inc. (right)

The period that ends the abbreviation also ends the sentence. Think of it as an environmentally friendly rule—one dot of ink serves two purposes.

Even though such sentences are correct, they can confuse readers who may not realize you've ended the sentence. It's best to write out the abbreviated word if it falls at the end of a sentence or to rewrite the sentence so the abbreviation doesn't come at the end.

The story is different when the sentence is a question or exclamation—then you need both punctuation marks:

  • Why did they choose Apple, Inc.?
  • I adore their name: Apple, Inc.!

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About the Author

Mignon Fogarty

Mignon Fogarty is the founder of Quick and Dirty Tips and the author of seven books on language, including the New York Times bestseller "Grammar Girl's Quick and Dirty Tips for Better Writing." She is an inductee in the Podcasting Hall of Fame, and the show is a five-time winner of Best Education Podcast in the Podcast Awards. She has appeared as a guest expert on the Oprah Winfrey Show and the Today Show. Her popular LinkedIn Learning courses help people write better to communicate better.