Pob llythyren acenog yn y Gymraeg.
Mae'r degol, hex a named ar gyfer dogfennau html.
| Llythyren | Côd | Disgrifiad | Decimal | Hex | Named |
|---|---|---|---|---|---|
| Â | U+00C2 | LATIN CAPITAL LETTER A WITH CIRCUMFLEX | Â | Â | Â |
| â | U+00E2 | LATIN SMALL LETTER A WITH CIRCUMFLEX | â | â | â |
| Ê | U+00CA | LATIN CAPITAL LETTER E WITH CIRCUMFLEX | Ê | Ê | Ê |
| ê | U+00EA | LATIN SMALL LETTER E WITH CIRCUMFLEX | ê | ê | ê |
| Î | U+00CE | LATIN CAPITAL LETTER I WITH CIRCUMFLEX | Î | Î | Î |
| î | U+00EE | LATIN SMALL LETTER I WITH CIRCUMFLEX | î | î | î |
| Ô | U+00D4 | LATIN CAPITAL LETTER O WITH CIRCUMFLEX | Ô | Ô | Ô |
| ô | U+00F4 | LATIN SMALL LETTER O WITH CIRCUMFLEX | ô | ô | ô |
| Û | U+00DB | LATIN CAPITAL LETTER U WITH CIRCUMFLEX | Û | Û | Û |
| û | U+00FB | LATIN SMALL LETTER U WITH CIRCUMFLEX | û | û | û |
| Ŵ | U+0174 | LATIN CAPITAL LETTER W WITH CIRCUMFLEX | Ŵ | Ŵ | |
| ŵ | U+0175 | LATIN SMALL LETTER W WITH CIRCUMFLEX | ŵ | ŵ | |
| Ŷ | U+0176 | LATIN CAPITAL LETTER Y WITH CIRCUMFLEX | Ŷ | Ŷ | |
| ŷ | U+0177 | LATIN SMALL LETTER Y WITH CIRCUMFLEX | ŷ | ŷ |