HTMLで使うことができる文字実体参照です。
W3Cの勧告で定義されているものの一覧です。
しかしブラウザによって表示されない（四角が表示される）ものもあります。
例えば半角スペースを表示したい場合、nbsp (#160)と書いてあるので、
か、  と書きます。
| 文字(半角) | 表示される文字 | 文字(半角) | 表示される文字 |
| nbsp (#160) | （半角スペース） | iexcl (#161) | ¡ |
| cent (#162) | ¢ | pound(#163) | £ |
| curren (#164) | ¤ | yen (#165) | ¥ |
| brvbar (#166) | ¡ | sect (#167) | § |
| uml (#168) | ¨ | copy (#169) | © |
| ordf (#170) | ª | laquo (#171) | « |
| not (#172) | ¬ | shy (#173) | |
| reg (#174) | ® | macr (#175) | ¯ |
| deg (#176) | ° | plusmn (#177) | ± |
| sup2 (#178) | ² | sup3 (#179) | ³ |
| acute (#180) | ´ | micro (#181) | µ |
| para (#182) | ¶ | middot (#183) | · |
| cedil (#184) | ¸ | sup1 (#185) | ¹ |
| ordm (#186) | º | raquo (#187) | » |
| frac14 (#188) | ¼ | frac12 (#189) | ½ |
| frac34 (#190) | ¾ | iquest (#191) | ¿ |
| Agrave (#192) | À | Aacute (#193) | Á |
| Acirc (#194) | Â | Atilde (#195) | Ã |
| Auml (#196) | Ä | Aring (#197) | Å |
| AElig (#198) | Æ | Ccedil (#199) | Ç |
| Egrave (#200) | È | Eacute (#201) | É |
| Ecirc (#202) | Ê | Euml (#203) | Ë |
| Igrave (#204) | Ì | Iacute (#205) | Í |
| Icirc (#206) | Î | Iuml (#207) | Ï |
| ETH (#208) | Ð | Ntilde (#209) | Ñ |
| Ograve (#210) | Ò | Oacute (#211) | Ó |
| Ocirc (#212) | Ô | Otilde (#213) | Õ |
| Ouml (#214) | Ö | times (#215) | × |
| Oslash (#216) | Ø | Ugrave (#217) | Ù |
| Uacute (#218) | Ú | Ucirc (#219) | Û |
| Uuml (#220) | Ü | Yacute (#221) | Ý |
| THORN (#222) | Þ | szlig (#223) | ß |
| agrave (#224) | à | aacute (#225) | á |
| acirc (#226) | â | atilde (#227) | ã |
| auml (#228) | ä | aring (#229) | å |
| aelig (#230) | æ | ccedil (#231) | ç |
| egrave (#232) | è | eacute (#233) | é |
| ecirc (#234) | ê | euml (#235) | ë |
| igrave (#236) | ì | iacute (#237) | í |
| icirc (#238) | î | iuml (#239) | ï |
| eth (#240) | ð | ntilde (#241) | ñ |
| ograve (#242) | ò | oacute (#243) | ó |
| ocirc (#244) | ô | otilde (#245) | õ |
| ouml (#246) | ö | divide (#247) | ÷ |
| oslash (#248) | ø | ugrave (#249) | ù |
| uacute (#250) | ú | ucirc (#251) | û |
| uuml (#252) | ü | yacute (#253) | ý |
| thorn (#254) | þ | yuml (#255) | ÿ |
| 文字(半角) | 表示される文字 | 文字(半角) | 表示される文字 |
| fnof (#402) | ƒ | Alpha (#913) | Α |
| Beta (#914) | Β | Gamma(#915) | Γ |
| Delta (#916) | Δ | Epsilon (#917) | Ε |
| Zeta (#918) | Ζ | Eta (#919) | Η |
| Theta (#920) | Θ | Iota (#921) | Ι |
| Kappa (#922) | Κ | Lambda (#923) | Λ |
| Mu (#924) | Μ | Nu (#925) | Ν |
| Xi (#926) | Ξ | Omicron (#927) | Ο |
| Pi (#928) | Π | Rho (#929) | Ρ |
| Sigma (#931) | Σ | Tau (#932) | Τ |
| Upsilon (#933) | Υ | Phi (#934) | Φ |
| Chi (#935) | Χ | Psi (#936) | Ψ |
| Omega (#937) | Ω | alpha (#945) | α |
| beta (#946) | β | gamma (#947) | γ |
| delta (#948) | δ | epsilon (#949) | ε |
| zeta (#950) | ζ | eta (#951) | η |
| theta (#952) | θ | iota (#953) | ι |
| kappa (#954) | κ | lambda (#955) | λ |
| mu (#956) | μ | nu (#957) | ν |
| xi (#958) | ξ | omicron (#959) | ο |
| pi (#960) | π | rho (#961) | ρ |
| sigmaf (#962) | ς | sigma (#963) | σ |
| tau (#964) | τ | upsilon (#965) | υ |
| phi (#966) | φ | chi (#967) | χ |
| psi (#968) | ψ | omega (#969) | ω |
| thetasym (#977) | ϑ | upsih (#978) | ϒ |
| piv (#982) | ϖ | bull (#8226) | • |
| hellip (#8230) | … | prime (#8242) | ′ |
| Prime (#8243) | ″ | oline (#8254) | ‾ |
| frasl (#8260) | ⁄ | weierp (#8472) | ℘ |
| image (#8465) | ℑ | real (#8476) | ℜ |
| trade (#8482) | ™ | alefsym (#8501) | ℵ |
| larr (#8592) | ← | uarr (#8593) | ↑ |
| rarr (#8594) | → | darr (#8595) | ↓ |
| harr (#8596) | ↔ | crarr (#8629) | ↵ |
| lArr (#8656) | ⇐ | uArr (#8657) | ⇑ |
| rArr (#8658) | ⇒ | dArr (#8659) | ⇓ |
| hArr (#8660) | ⇔ | forall (#8704) | ∀ |
| part (#8706) | ∂ | exist (#8707) | ∃ |
| empty (#8709) | ∅ | nabla (#8711) | ∇ |
| isin (#8712) | ∈ | notin (#8713) | ∉ |
| ni (#8715) | ∋ | prod (#8719) | ∏ |
| sum (#8721) | ∑ | minus (#8722) | − |
| lowast (#8727) | ∗ | radic (#8730) | √ |
| prop (#8733) | ∝ | infin (#8734) | ∞ |
| ang (#8736) | ∠ | and (#8743) | ∧ |
| or (#8744) | ∨ | cap (#8745) | ∩ |
| cup (#8746) | ∪ | int (#8747) | ∫ |
| there4 (#8756) | ∴ | sim (#8764) | ∼ |
| cong (#8773) | ≅ | asymp (#8776) | ≈ |
| ne (#8800) | ≠ | equiv (#8801) | ≡ |
| le (#8804) | ≤ | ge (#8805) | ≥ |
| sub (#8834) | ⊂ | sup (#8835) | ⊃ |
| nsub (#8836) | ⊄ | sube (#8838) | ⊆ |
| supe (#8839) | ⊇ | oplus (#8853) | ⊕ |
| otimes (#8855) | ⊗ | perp (#8869) | ⊥ |
| sdot (#8901) | ⋅ | lceil (#8968) | ⌈ |
| rceil (#8969) | ⌉ | lfloor (#8970) | ⌊ |
| rfloor (#8971) | ⌋ | lang (#9001) | ⟨ |
| rang (#9002) | ⟩ | loz (#9674) | ◊ |
| spades (#9824) | ♠ | clubs (#9827) | ♣ |
| hearts (#9829) | ♥ | diams (#9830) | ♦ |
| 文字(半角) | 表示される文字 | 文字(半角) | 表示される文字 |
| quot (#34) | " | amp (#38) | & |
| lt (#60) | < | gt(#62) | > |
| OElig (#338) | Œ | oelig (#339) | œ |
| Scaron (#352) | Š | scaron (#353) | š |
| Yuml (#376) | Ÿ | circ (#710) | ˆ |
| tilde (#732) | ˜ | ensp (#8194) | |
| emsp (#8195) | thinsp (#8201) | ||
| zwnj (#8204) | | zwj (#8205) | |
| lrm (#8206) | | rlm (#8207) | |
| ndash (#8211) | – | mdash (#8212) | — |
| lsquo (#8216) | ‘ | rsquo (#8217) | ’ |
| sbquo (#8218) | ‚ | ldquo (#8220) | “ |
| rdquo (#8221) | ” | bdquo (#8222) | „ |
| dagger (#8224) | † | Dagger (#8225) | ‡ |
| permil (#8240) | ‰ | lsaquo (#8249) | ‹ |
| rsaquo (#8250) | › | euro (#8364) | € |