HTML5 实体名称（按字母排序）- R
旧版浏览器可能不支持下表中的所有 HTML5 实体。
Chrome 和 Opera 对此提供了良好的支持，IE 11+ 和 Firefox 35+ 支持所有实体。
| 字符 | 实体名称 | 十六进制 | 十进制 |
|---|---|---|---|
| ⇛ | rAarr | 021DB | 8667 |
| ∽̱ | race | 0223D + 00331 | |
| Ŕ | Racute | 00154 | 340 |
| ŕ | racute | 00155 | 341 |
| √ | radic | 0221A | 8730 |
| ⦳ | raemptyv | 029B3 | 10675 |
| ⟫ | Rang | 027EB | 10219 |
| ⟩ | rang | 027E9 | 10217 |
| ⦒ | rangd | 02992 | 10642 |
| ⦥ | range | 029A5 | 10661 |
| ⟩ | rangle | 027E9 | 10217 |
| » | raquo | 000BB | 187 |
| ↠ | Rarr | 021A0 | 8608 |
| ⇒ | rArr | 021D2 | 8658 |
| → | rarr | 02192 | 8594 |
| ⥵ | rarrap | 02975 | 10613 |
| ⇥ | rarrb | 021E5 | 8677 |
| ⤠ | rarrbfs | 02920 | 10528 |
| ⤳ | rarrc | 02933 | 10547 |
| ⤞ | rarrfs | 0291E | 10526 |
| ↪ | rarrhk | 021AA | 8618 |
| ↬ | rarrlp | 021AC | 8620 |
| ⥅ | rarrpl | 02945 | 10565 |
| ⥴ | rarrsim | 02974 | 10612 |
| ⤖ | Rarrtl | 02916 | 10518 |
| ↣ | rarrtl | 021A3 | 8611 |
| ↝ | rarrw | 0219D | 8605 |
| ⤜ | rAtail | 0291C | 10524 |
| ⤚ | ratail | 0291A | 10522 |
| ∶ | ratio | 02236 | 8758 |
| ℚ | rationals | 0211A | 8474 |
| ⤐ | RBarr | 02910 | 10512 |
| ⤏ | rBarr | 0290F | 10511 |
| ⤍ | rbarr | 0290D | 10509 |
| ❳ | rbbrk | 02773 | 10099 |
| } | rbrace | 0007D | 125 |
| ] | rbrack | 0005D | 93 |
| ⦌ | rbrke | 0298C | 10636 |
| ⦎ | rbrksld | 0298E | 10638 |
| ⦐ | rbrkslu | 02990 | 10640 |
| Ř | Rcaron | 00158 | 344 |
| ř | rcaron | 00159 | 345 |
| Ŗ | Rcedil | 00156 | 342 |
| ŗ | rcedil | 00157 | 343 |
| ⌉ | rceil | 02309 | 8969 |
| } | rcub | 0007D | 125 |
| Р | Rcy | 00420 | 1056 |
| р | rcy | 00440 | 1088 |
| ⤷ | rdca | 02937 | 10551 |
| ⥩ | rdldhar | 02969 | 10601 |
| ” | rdquo | 0201D | 8221 |
| ” | rdquor | 0201D | 8221 |
| ↳ | rdsh | 021B3 | 8627 |
| ℜ | Re | 0211C | 8476 |
| ℜ | real | 0211C | 8476 |
| ℛ | realine | 0211B | 8475 |
| ℜ | realpart | 0211C | 8476 |
| ℝ | reals | 0211D | 8477 |
| ▭ | rect | 025AD | 9645 |
| ® | reg | 000AE | 174 |
| ∋ | ReverseElement | 0220B | 8715 |
| ⇋ | ReverseEquilibrium | 021CB | 8651 |
| ⥯ | ReverseUpEquilibrium | 0296F | 10607 |
| ⥽ | rfisht | 0297D | 10621 |
| ⌋ | rfloor | 0230B | 8971 |
| ℜ | Rfr | 0211C | 8476 |
| 𝔯 | rfr | 1D52F | 120111 |
| ⥤ | rHar | 02964 | 10596 |
| ⇁ | rhard | 021C1 | 8641 |
| ⇀ | rharu | 021C0 | 8640 |
| ⥬ | rharul | 0296C | 10604 |
| Ρ | Rho | 003A1 | 929 |
| ρ | rho | 003C1 | 961 |
| ϱ | rhov | 003F1 | 1009 |
| ⟩ | RightAngleBracket | 027E9 | 10217 |
| → | RightArrow | 02192 | 8594 |
| ⇒ | Rightarrow | 021D2 | 8658 |
| → | rightarrow | 02192 | 8594 |
| ⇥ | RightArrowBar | 021E5 | 8677 |
| ⇄ | RightArrowLeftArrow | 021C4 | 8644 |
| ↣ | rightarrowtail | 021A3 | 8611 |
| ⌉ | RightCeiling | 02309 | 8969 |
| ⟧ | RightDoubleBracket | 027E7 | 10215 |
| ⥝ | RightDownTeeVector | 0295D | 10589 |
| ⇂ | RightDownVector | 021C2 | 8642 |
| ⥕ | RightDownVectorBar | 02955 | 10581 |
| ⌋ | RightFloor | 0230B | 8971 |
| ⇁ | rightharpoondown | 021C1 | 8641 |
| ⇀ | rightharpoonup | 021C0 | 8640 |
| ⇄ | rightleftarrows | 021C4 | 8644 |
| ⇌ | rightleftharpoons | 021CC | 8652 |
| ⇉ | rightrightarrows | 021C9 | 8649 |
| ↝ | rightsquigarrow | 0219D | 8605 |
| ⊢ | RightTee; | 022A2 | 8866 |
| ↦ | RightTeeArrow | 021A6 | 8614 |
| ⥛ | RightTeeVector | 0295B | 10587 |
| ⋌ | rightthreetimes | 022CC | 8908 |
| ⊳ | RightTriangle | 022B3 | 8883 |
| ⧐ | RightTriangleBar | 029D0 | 10704 |
| ⊵ | RightTriangleEqual | 022B5 | 8885 |
| ⥏ | RightUpDownVector | 0294F | 10575 |
| ⥜ | RightUpTeeVector | 0295C | 10588 |
| ↾ | RightUpVector | 021BE | 8638 |
| ⥔ | RightUpVectorBar | 02954 | 10580 |
| ⇀ | RightVector | 021C0 | 8640 |
| ⥓ | RightVectorBar | 02953 | 10579 |
| ˚ | ring | 002DA | 730 |
| ≓ | risingdotseq | 02253 | 8787 |
| ⇄ | rlarr | 021C4 | 8644 |
| ⇌ | rlhar | 021CC | 8652 |
| | rlm | 0200F | 8207 |
| ⎱ | rmoust | 023B1 | 9137 |
| ⎱ | rmoustache | 023B1 | 9137 |
| ⫮ | rnmid | 02AEE | 10990 |
| ⟭ | roang | 027ED | 10221 |
| ⇾ | roarr | 021FE | 8702 |
| ⟧ | robrk | 027E7 | 10215 |
| ⦆ | ropar | 02986 | 10630 |
| ℝ | Ropf | 0211D | 8477 |
| 𝕣 | ropf | 1D563 | 120163 |
| ⨮ | roplus | 02A2E | 10798 |
| ⨵ | rotimes | 02A35 | 10805 |
| ⥰ | RoundImplies | 02970 | 10608 |
| ) | rpar | 00029 | 41 |
| ⦔ | rpargt | 02994 | 10644 |
| ⨒ | rppolint | 02A12 | 10770 |
| ⇉ | rrarr | 021C9 | 8649 |
| ⇛ | Rrightarrow | 021DB | 8667 |
| › | rsaquo | 0203A | 8250 |
| ℛ | Rscr | 0211B | 8475 |
| 𝓇 | rscr | 1D4C7 | 120007 |
| ↱ | Rsh | 021B1 | 8625 |
| ↱ | rsh | 021B1 | 8625 |
| ] | rsqb | 0005D | 93 |
| ’ | rsquo | 02019 | 8217 |
| ’ | rsquor | 02019 | 8217 |
| ⋌ | rthree | 022CC | 8908 |
| ⋊ | rtimes | 022CA | 8906 |
| ▹ | rtri | 025B9 | 9657 |
| ⊵ | rtrie | 022B5 | 8885 |
| ▸ | rtrif | 025B8 | 9656 |
| ⧎ | rtriltri | 029CE | 10702 |
| ⧴ | RuleDelayed | 029F4 | 10740 |
| ⥨ | ruluhar | 02968 | 10600 |
| ℞ | rx | 0211E | 8478 |
