Latin Capital Letter O Letter
The symbol O is the Latin capital letter “O”, Unicode U+004F.
U+004F
“O” is a basic Latin capital letter used in everyday writing and digital text. On this page you can copy it and find its common Unicode and escape forms.
Latin Capital Letter O Letter Meaning
O is the Latin capital letter O, represented by Unicode U+004F (HTML entity O). As a letter, its “meaning” depends on context: it appears as the uppercase form of the vowel O in words, abbreviations, and names. In writing and design it’s often used for labeling, headings, and letter-based placeholders (like “Option O” or “Section O”). In computing, it’s primarily a character—meaning its behavior comes from standard text rendering and fonts rather than a special technical symbol role.
Common uses
- •Writing and typography as the uppercase vowel “O”
- •Headings, titles, and section labels in documents and UI
- •Options in forms or quizzes (e.g., “Option O”)
- •Branding and product names that use an initial “O”
- •Placeholder text and letter markers in lists or diagrams
Examples
O — Latin Capital Letter O
- OOpen the file and press O to proceed.
- OChoose option O from the list.
- OOrder number: O-1042.
- OThe label reads: O (uppercase).
- OSelect the O character in the font preview.
Variations
Technical codes
| Unicode | U+004F | |
| HTML Entity | O | |
| HTML Code | O | |
| CSS | \004F | |
| Alt Code | Alt + 79 | |
| Decimal | 79 |
How to type Latin Capital Letter O Letter (O)
On Windows
Hold Alt and type 79 on the numeric keypad. In Word, type 004F then press Alt + X.
On Mac
Switch to the Unicode Hex Input keyboard, then hold Option and type 004F. Or press Control + Command + Space and search.
On Linux
Press Control + Shift + U, type 004f, then press Enter or Space.
Anywhere
Copy O with the button above and paste it wherever you need it — this works on every device and in every app, with no keyboard shortcut to remember.
FAQ
What does the Latin Capital Letter O letter mean?
O is the Latin capital letter O, represented by Unicode U+004F (HTML entity O). As a letter, its “meaning” depends on context: it appears as the uppercase form of the vowel O in words, abbreviations, and names. In writing and design it’s often used for labeling, headings, and letter-based placeholders (like “Option O” or “Section O”). In computing, it’s primarily a character—meaning its behavior comes from standard text rendering and fonts rather than a special technical symbol role.
What Unicode character is the letter O?
The symbol “O” is the Latin Capital Letter O with Unicode code point U+004F.
How do I write it in HTML?
You can use the HTML entity O.
How do I escape it in CSS?
Use the CSS escape \\004F.
How do I escape it in JavaScript?
You can use \\u{004F} in JavaScript.