do you underline or italicize book titles: Easy guide. 2026

When it comes to writing, especially academic or professional work, one common question often pops up: do you underline or italicize book titles? Many writers, students, and even professional editors get confused because the rules seem different depending on context, style guide, or even geographical location.

In both British English (UK) and American English (US), formatting rules for book titles may differ slightly, which can add to the confusion. For instance, some UK style guides historically leaned towards underlining printed book titles, while US style guides, like the Chicago Manual of Style, primarily recommend italicizing them.

Therefore, clarifying whether to underline or italicize book titles is important for anyone writing essays, articles, reports, or creative content. This article will provide clear guidance, practical examples, and tips to help you master the correct usage.

Quick Answer

In most modern writing, book titles should be italicized, not underlined. Underlining was traditionally used when italics were not available, such as on typewriters or early handwritten manuscripts. Today, with digital formatting available in most word processors, italics are preferred in both UK and US writing.

However, if italics are unavailable, underlining is an acceptable fallback. This approach works for handwritten work or older printing formats. Remember, quotation marks are generally reserved for shorter works, like chapters, articles, or poems, not entire books.

Meaning of the Correct Form

Italicizing Book Titles

Italicizing a book title means slanting the text to distinguish it from other types of text. This helps readers instantly recognize that the words refer to a book or other standalone work.

Examples (US English):

To Kill a Mockingbird is a classic American novel.
I recently read The Great Gatsby and loved its style.
She referenced Moby-Dick in her essay.

Examples (UK English):

In Pride and Prejudice, Jane Austen explores societal norms.
His favourite book is Wuthering Heights.
We discussed 1984 during literature class.

Italicizing book titles is the standard across most style guides, including APA, MLA, Chicago, and Oxford, making it a reliable choice for academic and professional writing.

Meaning of the Incorrect Form

Underlining Book Titles

Underlining a book title involves drawing a line beneath the title instead of using italics. Historically, this method was used to emphasize titles when italics were unavailable, such as in typewritten documents.

Examples of underlining (less common today):

To Kill a Mockingbird
The Great Gatsby
Pride and Prejudice

While still technically correct in some contexts, underlining is generally seen as outdated and less visually appealing in modern digital documents. Using underlines when italics are available can sometimes make your writing appear old-fashioned or less professional.

Keyword Comparison / Key Differences

Feature	Italics (Preferred)	Underline (Fallback / Old Style)
Appearance	Slanted text	Text with a line underneath
Modern Usage	Standard in digital and printed text	Rare, mostly in handwritten or typewriter-era documents
UK vs US	Both use italics in modern style guides	Rarely used in UK; occasionally in US for typewriting
Academic Style Guides	APA, MLA, Chicago, Oxford	Generally not recommended unless italics unavailable

Key Difference: Italics are visually cleaner and widely accepted, whereas underlining is now mainly a historical convention.

Common Mistakes People Make

Many writers make mistakes when formatting book titles. Here are some typical errors:

Using quotation marks for books
- ❌ Incorrect: “To Kill a Mockingbird”
- ✅ Correct: To Kill a Mockingbird
Underlining when italics are available
- ❌ Incorrect: The Great Gatsby (in Word or Google Docs where italics exist)
- ✅ Correct: The Great Gatsby
Italicizing short works instead of quotation marks
- ❌ Incorrect: The Raven (poem)
- ✅ Correct: “The Raven”
Mixing formats in the same document
- ❌ Incorrect: Some titles are italicized, others underlined without reason.
- ✅ Correct: Use italics consistently for all book titles.
Confusing UK and US punctuation with formatting
- US often places commas and periods inside quotation marks, while UK places them outside, but italics remain the same.

Correct Usage in Sentences

Here are multiple examples of correctly formatted book titles in real-life contexts:

US English

I just finished reading The Catcher in the Rye, and it was fascinating.
My professor recommended Beloved for the literature review.
Have you ever read The Chronicles of Narnia?

UK English

I recently borrowed Jane Eyre from the local library.
The teacher asked us to study Great Expectations for homework.
He quoted from Lord of the Flies in his essay.

Tips: Notice that italics are used consistently regardless of British or American spelling; differences appear mainly in punctuation placement.

Tips to Remember the Correct Usage

Think “standalone works” – Only books, movies, plays, and newspapers get italics. Shorter works like poems, articles, or chapters use quotation marks.
Italics over underline – Always prefer italics if your software allows it. Underlining is your backup.
Consistency is key – Once you choose italics, use it for all book titles in your document.
Mnemonic trick – Imagine your book “standing out” on a shelf; italics make it visually stand out.
Check style guides – APA, MLA, Chicago, or Oxford will confirm italics for book titles.

FAQs

1. Do UK writers ever underline book titles?
Yes, historically, underlining was common, but modern UK style guides prefer italics.

2. Can I use italics for handwritten notes?
Italics are difficult to handwrite. In that case, underlining is acceptable.

3. Should I italicize series names or just individual books?
Italicize both series and individual book titles. For example: Harry Potter and the Sorcerer’s Stone.

4. Are italics required in emails or online posts?
Yes, if your platform supports formatting. If not, underlining or quotation marks are acceptable substitutes.

5. How do I format books in MLA vs APA?

MLA: Italicize book titles.
APA: Italicize book titles. Both agree on italics.

6. What about non-English book titles?
Treat foreign titles the same: Cien Años de Soledad (italicized).

7. Can I mix underlining and italics for emphasis?
No. Choose italics for book titles; reserve underlining for special emphasis if needed.

Conclusion

In conclusion, italicizing book titles is the modern, professional standard for both UK and US English. Underlining is an acceptable fallback in handwritten or typewritten contexts but is less common today. Remember to stay consistent, use italics for all standalone works, and reserve quotation marks for shorter pieces like chapters or articles.

By mastering this small but important detail, your writing will appear polished, credible, and reader-friendly. So next time you ask yourself, “do you underline or italicize book titles?”, remember: italics first, underline only if necessary. Start applying these rules today to improve your essays, articles, and creative writing effortlessly.