Lowercase u with tilde (ũ) is the Latin Extended-A character at Unicode U+0169 (LATIN SMALL LETTER U WITH TILDE). A tilde (~) sits above the letter. Used in Vietnamese and some African orthographies. HTML5 defines the named entity ũ.
Remember
Character ũ
Unicode U+0169
Named entity ũ
Hex entity ũ
Decimal ũ
CSS escape \0169
All of these produce the same glyph: ũ. Prefer ũ or a pasted ũ in UTF-8 pages; use numeric or CSS forms when you need them.
Reference
Quick Reference
One table for every form you will actually use.
Form
Code
Where it goes
Direct character
ũ
HTML text (UTF-8 default)
Named entity
ũ
HTML markup (readable choice)
Hex entity
ũ
HTML markup
Decimal entity
ũ
HTML markup
CSS escape
\0169
Stylesheet content
When to Use Which
Situation
Use
Vietnamese / UTF-8 text
Type or paste ũ
Readable entity in HTML source
ũ
Numeric entity required
ũ or ũ
Generated text via ::before / ::after
content: "\0169"
ñ (n with tilde)
Different base letter — see Related Topics
See it
Live Preview
Lowercase u with tilde rendered in common contexts.
Vietnamesengũ, vũ, trũ
Large glyphũ
Case pairŨ ũ
With entitiesNamed: ũ | Hex: ũ | Decimal: ũ
Not the sameu (U+0075) · ñ (ñ)
Code
Complete HTML Example
One page that shows lowercase u with tilde with named, hex, decimal, and CSS forms. Use View Output or open the live editor.
Named + Hex + Decimal + CSS
Four ways to produce ũ in a single document.
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Lowercase U Tilde (ũ) in HTML</title>
<style>
#point::after {
content: "\0169";
}
</style>
</head>
<body>
<p>U Tilde using Named Entity: ũ</p>
<p>U Tilde using Hex Code: ũ</p>
<p>U Tilde using HTML Code: ũ</p>
<p id="point">U Tilde using CSS Entity: </p>
</body>
</html>
U Tilde using Named Entity: ũ
U Tilde using Hex Code: ũ
U Tilde using HTML Code: ũ
U Tilde using CSS Entity: ũ
How It Works
1. Named:ũ is the HTML5 named entity for U+0169. Clearest form in HTML source.
2. Hex:U+0169 → ũ in HTML. Same glyph as named.
3. Decimal: same code point as 361 → ũ. Same result.
4. CSS: use \0169 in content (not an HTML entity). #point::after appends that ũ after the paragraph text.
Pitfalls & Tips
Common mistakes when working with the u tilde entity.
Named
Prefer ũ
HTML5 defines a named entity for this letter — use it for readable HTML.
CSS vs HTML
Do not mix escapes
\0169 belongs in CSS. ũ / ũ / ũ belong in HTML.
Look-alikes
Not u or ñ
Plain u is U+0075; n tilde ñ is U+00F1. Same mark, different base letter.
Case
ũ vs Ũ
Uppercase is U+0168 (Ũ) — a different code point from U+0169.
Semicolon
End references
Always finish with ; — write ũ, not &utilde.
UTF-8
Declare charset
If you paste ũ directly, serve the page as UTF-8 with <meta charset="UTF-8">.
Compatibility
Browser Support
Lowercase u with tilde (U+0169) and its entity forms (ũ, ũ, ũ, CSS \\0169) are supported in all mainstream browsers.
✓ Universal support
Lowercase U Tilde (ũ)
Use ũ, paste ũ, or encode with hex, decimal, or CSS escape — same glyph everywhere.
100%Browser coverage
Google ChromeSupported
Yes
Microsoft EdgeSupported
Yes
Mozilla FirefoxSupported
Yes
Apple SafariSupported
Yes
OperaSupported
Yes
Internet ExplorerAll versions
Yes
U+0169 / entitiesFull support
Bottom line: Prefer ũ or a pasted ũ in UTF-8 text. Use ũ / ũ when a numeric form is required, and \\0169 only inside CSS content.
Remember
Key Takeaways
Unicode: u with tilde is U+0169 (decimal 361), Latin Extended-A.
HTML: prefer ũ, or use ũ / ũ.
CSS: use \0169 inside content for generated text.
Use: Vietnamese ũ — not the same as plain u or ñ.
One line:U+0169 → ũ, or ũ / ũ / CSS \0169.
Frequently Asked Questions
Use ũ (named), ũ (hex), ũ (decimal), or the CSS escape \0169 in the content property. All render ũ. In UTF-8 files you can also type or paste ũ directly.
U+0169 (LATIN SMALL LETTER U WITH TILDE). Hex 0169, decimal 361. It belongs to Latin Extended-A and is used in Vietnamese and some African orthographies.
Yes. HTML5 defines ũ for this character. You can also use numeric references ũ or ũ.
Use it for Vietnamese and other Latin text with ũ, linguistic examples, CSS-generated content, or when encoding must be explicit. Prefer ũ when you want a readable named form in HTML source.
HTML entities (ũ, ũ, or ũ) go in markup. The CSS escape \0169 is used in stylesheets (usually in the content property of ::before/::after). Both render ũ.
Plain u is U+0075. ñ (U+00F1, ñ) is n with tilde. ũ (U+0169) is u with tilde — a different base letter. Do not substitute one for another.
🤔
Did you know?
Lowercase u with tilde (ũ) is Unicode U+0169 (decimal 361) in Latin Extended-A. HTML5 defines the named entity ũ — also usable as ũ or ũ. Used in Vietnamese (ngũ, vũ) and some African orthographies.
