المتصفحات القديمة قد لا تدعم جميع الكيانات HTML5 في الجدول أدناه.
لديها الكروم دعم جيد. ولكن (currently) فقط IE و Firefox 11+ 35+ دعم جميع الجهات.
| حرف | اسم الكيان | عشري |
|---|---|---|
| Ó | Oacute | 000D3 |
| ó | oacute | 000F3 |
| ⊛ | oast | 0229B |
| ⊚ | ocir | 0229A |
| Ô | Ocirc | 000D4 |
| ô | ocirc | 000F4 |
| О | Ocy | 0041E |
| о | ocy | 0043E |
| ⊝ | odash | 0229D |
| Ő | Odblac | 00150 |
| ő | odblac | 00151 |
| ⨸ | odiv | 02A38 |
| ⊙ | odot | 02299 |
| ⦼ | odsold | 029BC |
| Π| OElig | 00152 |
| œ | oelig | 00153 |
| ⦿ | ofcir | 029BF |
| 𝔒 | Ofr | 1D512 |
| 𝔬 | ofr | 1D52C |
| ˛ | ogon | 002DB |
| Ò | Ograve | 000D2 |
| ò | ograve | 000F2 |
| ⧁ | ogt | 029C1 |
| ⦵ | ohbar | 029B5 |
| Ω | ohm | 003A9 |
| ∮ | oint | 0222E |
| ↺ | olarr | 021BA |
| ⦾ | olcir | 029BE |
| ⦻ | olcross | 029BB |
| ‾ | oline | 0203E |
| ⧀ | olt | 029C0 |
| Ō | Omacr | 0014C |
| ō | omacr | 0014D |
| Ω | Omega | 003A9 |
| ω | omega | 003C9 |
| Ο | Omicron | 0039F |
| ο | omicron | 003BF |
| ⦶ | omid | 029B6 |
| ⊖ | ominus | 02296 |
| 𝕆 | Oopf | 1D546 |
| 𝕠 | oopf | 1D560 |
| ⦷ | opar | 029B7 |
| “ | OpenCurlyDoubleQuote | 0201C |
| ‘ | OpenCurlyQuote | 02018 |
| ⦹ | operp | 029B9 |
| ⊕ | oplus | 02295 |
| ⩔ | Or | 02A54 |
| ∨ | or | 02228 |
| ↻ | orarr | 021BB |
| ⩝ | ord | 02A5D |
| ℴ | order | 02134 |
| ℴ | orderof | 02134 |
| ª | ordf | 000AA |
| º | ordm | 000BA |
| ⊶ | origof | 022B6 |
| ⩖ | oror | 02A56 |
| ⩗ | orslope | 02A57 |
| ⩛ | orv | 02A5B |
| Ⓢ | oS | 024C8 |
| 𝒪 | Oscr | 1D4AA |
| ℴ | oscr | 02134 |
| Ø | Oslash | 000D8 |
| ø | oslash | 000F8 |
| ⊘ | osol | 02298 |
| Õ | Otilde | 000D5 |
| õ | otilde | 000F5 |
| ⨷ | Otimes | 02A37 |
| ⊗ | otimes | 02297 |
| ⨶ | otimesas | 02A36 |
| Ö | Ouml | 000D6 |
| ö | ouml | 000F6 |
| ⌽ | ovbar | 0233D |
| ‾ | OverBar | 0203E |
| ⏞ | OverBrace | 023DE |
| ⎴ | OverBracket | 023B4 |
| ⏜ | OverParenthesis | 023DC |