$\begin{array}{rl}\text{rAarr}& \Rrightarrow \\ \text{race}& \backsim ̱\\ \text{racute}& ŕ\\ \text{Racute}& Ŕ\\ \text{radic}& \surd \\ \text{raemptyv}& ⦳\\ \text{rang}& ⟩\\ \text{Rang}& ⟫\\ \text{rangd}& ⦒\\ \text{range}& ⦥\\ \text{rangle}& ⟩\\ \text{raquo}& »\\ \text{rarr}& \to \\ \text{rArr}& \Rightarrow \\ \text{Rarr}& \twoheadrightarrow \\ \text{rarr2}& \&rarr2;\\ \text{rarrap}& ⥵\\ \text{rarrb}& ⇥\\ \text{rarrbfs}& ⤠\\ \text{rarrc}& ⤳\\ \text{rarrfs}& ⤞\\ \text{rarrhk}& \hookrightarrow \\ \text{rarrlp}& \looparrowright \\ \text{rarrpl}& ⥅\\ \text{rarrsim}& ⥴\\ \text{rarrtl}& \rightarrowtail \\ \text{Rarrtl}& ⤖\\ \text{rarrw}& \rightsquigarrow \\ \text{ratail}& ⤚\\ \text{rAtail}& ⤜\\ \text{ratio}& :\\ \text{rationals}& \mathbb{Q}\\ \text{rbarr}& ⤍\\ \text{rBarr}& ⤏\\ \text{RBarr}& ⤐\\ \text{rbbrk}& ❳\\ \text{rbrace}& \}\\ \text{rbrack}& ]\\ \text{rbrke}& ⦌\\ \text{rbrksld}& ⦎\\ \text{rbrkslu}& ⦐\\ \text{rcaron}& ř\\ \text{Rcaron}& Ř\\ \text{rcedil}& ŗ\\ \text{Rcedil}& Ŗ\\ \text{rceil}& \rceil \\ \text{rcub}& \}\\ \text{rcy}& р\\ \text{Rcy}& Р\\ \text{rdca}& ⤷\\ \text{rdldhar}& ⥩\\ \text{rdquo}& ”\\ \text{rdquor}& ”\\ \text{rdsh}& ↳\\ \text{Re}& \Re \\ \text{real}& \Re \\ \text{realine}& ℛ\\ \text{realpart}& \Re \\ \text{reals}& ℝ\\ \text{rect}& ▭\\ \text{reg}& \circledR \\ \text{ReverseElement}& \ni \\ \text{ReverseEquilibrium}& \leftrightharpoons \\ \text{ReverseUpEquilibrium}& ⥯\\ \text{rfisht}& ⥽\\ \text{rfloor}& \rfloor \\ \text{rfr}& 𝔯\\ \text{Rfr}& \Re \\ \text{rgr}& \mathrm{\&rgr;}\\ \text{Rgr}& \mathrm{\&Rgr;}\\ \text{rHar}& ⥤\\ \text{rhard}& \rightharpoondown \\ \text{rharu}& \rightharpoonup \\ \text{rharul}& ⥬\\ \text{rho}& \rho \\ \text{Rho}& {\rm P}\\ \text{rhov}& \varrho \\ \text{RightAngleBracket}& ⟩\\ \text{rightarrow}& \to \\ \text{Rightarrow}& \Rightarrow \\ \text{RightArrow}& \to \\ \text{RightArrowBar}& ⇥\\ \text{RightArrowLeftArrow}& \rightleftarrows \\ \text{rightarrowtail}& \rightarrowtail \\ \text{RightCeiling}& \rceil \\ \text{RightDoubleBracket}& ⟧\\ \text{RightDownTeeVector}& ⥝\\ \text{RightDownVector}& \downharpoonright \\ \text{RightDownVectorBar}& ⥕\\ \text{RightFloor}& \rfloor \\ \text{rightharpoondown}& \rightharpoondown \\ \text{rightharpoonup}& \rightharpoonup \\ \text{rightleftarrows}& \rightleftarrows \\ \text{rightleftharpoons}& \rightleftharpoons \\ \text{rightrightarrows}& \rightrightarrows \\ \text{rightsquigarrow}& \rightsquigarrow \\ \text{RightTee}& ⊢\\ \text{RightTeeArrow}& \mapsto \\ \text{RightTeeVector}& ⥛\\ \text{rightthreetimes}& ⋌\\ \text{RightTriangle}& ⊳\\ \text{RightTriangleBar}& ⧐\\ \text{RightTriangleEqual}& ⊵\\ \text{RightUpDownVector}& ⥏\\ \text{RightUpTeeVector}& ⥜\\ \text{RightUpVector}& \upharpoonright \\ \text{RightUpVectorBar}& ⥔\\ \text{RightVector}& \rightharpoonup \\ \text{RightVectorBar}& ⥓\\ \text{ring}& ˚\\ \text{risingdotseq}& \risingdotseq \\ \text{rlarr}& \rightleftarrows \\ \text{rlarr2}& \&rlarr2;\\ \text{rlhar}& \rightleftharpoons \\ \text{rlhar2}& \&rlhar2;\\ \text{rlm}& ‏\\ \text{rmoust}& ⎱\\ \text{rmoustache}& ⎱\\ \text{rnmid}& ⫮\\ \text{roang}& ⟭\\ \text{roarr}& ⇾\\ \text{robrk}& ⟧\\ \text{ropf}& 𝕣\\ \text{Ropf}& ℝ\\ \text{roplus}& ⨮\\ \text{rotimes}& ⨵\\ \text{RoundImplies}& ⥰\\ \text{rpar}& )\\ \text{rpargt}& ⦔\\ \text{rppolint}& ⨒\\ \text{rrarr}& \rightrightarrows \\ \text{Rrightarrow}& \Rrightarrow \\ \text{rsaquo}& ›\\ \text{rscr}& 𝓇\\ \text{Rscr}& ℛ\\ \text{rsh}& \Rsh \\ \text{Rsh}& \Rsh \\ \text{rsqb}& ]\\ \text{rsquo}& ’\\ \text{rsquor}& ’\\ \text{rthree}& ⋌\\ \text{rtimes}& ⋊\\ \text{rtri}& ▹\\ \text{rtrie}& ⊵\\ \text{rtrif}& ▸\\ \text{rtriltri}& ⧎\\ \text{RuleDelayed}& ⧴\\ \text{ruluhar}& ⥨\\ \text{rx}& ℞\end{array}$