# Θ U+0398 GREEK CAPITAL LETTER THETA

Uppercase Greek theta, an O with a horizontal bar across the middle; used in math and science, e.g. big theta notation in computer science.

| | |
|---|---|
| Character | `Θ` |
| Codepoint | U+0398 |
| Name | GREEK CAPITAL LETTER THETA |
| Block | [Greek and Coptic](https://unicodekit.com/block/greek-and-coptic) |
| Script | Greek |
| Category | Uppercase Letter (Lu) |
| Unicode version | 1.1 |
| HTML | `Θ` `Θ` |
| CSS | `\398` |
| JavaScript | `\u0398` |
| UTF-8 | CE 98 |
| UTF-16 | 0398 |

## Related characters

- Η [U+0397 GREEK CAPITAL LETTER ETA](https://unicodekit.com/char/0397)
- Ι [U+0399 GREEK CAPITAL LETTER IOTA](https://unicodekit.com/char/0399)
- Ζ [U+0396 GREEK CAPITAL LETTER ZETA](https://unicodekit.com/char/0396)
- Κ [U+039A GREEK CAPITAL LETTER KAPPA](https://unicodekit.com/char/039A)
- Ε [U+0395 GREEK CAPITAL LETTER EPSILON](https://unicodekit.com/char/0395)
- Λ [U+039B GREEK CAPITAL LETTER LAMDA](https://unicodekit.com/char/039B)
- Δ [U+0394 GREEK CAPITAL LETTER DELTA](https://unicodekit.com/char/0394)
- Μ [U+039C GREEK CAPITAL LETTER MU](https://unicodekit.com/char/039C)
- Γ [U+0393 GREEK CAPITAL LETTER GAMMA](https://unicodekit.com/char/0393)
- Ν [U+039D GREEK CAPITAL LETTER NU](https://unicodekit.com/char/039D)
- Β [U+0392 GREEK CAPITAL LETTER BETA](https://unicodekit.com/char/0392)
- Ξ [U+039E GREEK CAPITAL LETTER XI](https://unicodekit.com/char/039E)

Page: https://unicodekit.com/char/0398 · JSON: https://unicodekit.com/characters/0398