Blazon:„Vert, ahead a flanche wavy Argent and rear a unicorn rampant Argent.“ <br> 
The arms were officially granted on September 11, 1979. The unicorn in the arms is taken from the arms of the former court of Aschau, to which the municipality belonged. The white flank is canting (weissenbach means white river/stream).
Unknown author<span style="display: none;">Unknown author</span>
1979-09-11
<table class="layouttemplate" style="width:96%; border:2px solid #59A; background:#DEE; text-align:center; clear:both; margin:0.5em; line-height:1.6em; max-width:920px"><tbody><tr><td width="76px" style="padding:3px"><a href="//commons.wikimedia.org/wiki/File:NGW_Logo.svg" class="image"><img alt="NGW Logo.svg" src="https://upload.wikimedia.org/wikipedia/commons/thumb/f/fe/NGW_Logo.svg/64px-NGW_Logo.svg.png" decoding="async" width="64" height="67" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/f/fe/NGW_Logo.svg/96px-NGW_Logo.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/f/fe/NGW_Logo.svg/128px-NGW_Logo.svg.png 2x" data-file-width="420" data-file-height="440"></a></td>
<td><span style="font-size:1.1em">This image is taken from <a rel="nofollow" class="external text" href="http://www.ngw.nl/heraldrywiki/index.php?title=Wei%C3%9Fenbach_am_Lech">www.<b>ngw</b>.nl</a> <span style="font-family:serif; white-space:nowrap; font-variant:small-caps; font-size:97%;">– <a href="https://en.wikipedia.org/wiki/en:Heraldry_of_the_World" class="extiw" title="w:en:Heraldry of the World">Heraldry of the World</a> –</span> </span><br> an international civic heraldry site <span style="font-size:98%">by Ralf Hartemink.</span> <small><a rel="nofollow" class="external text" href="http://www.ngw.nl/heraldrywiki/index.php?title=Wei%C3%9Fenbach_am_Lech">ngw.nl/heraldrywiki/index.php?title=<b style="font-size:1.1em">Weißenbach_am_Lech</b></a></small>
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</tr></tbody></table><p><a rel="nofollow" class="external text" href="http://www.weissenbach.tirol.gv.at/system/web/sonderseite.aspx?menuonr=220743485&amp;detailonr=220743485">Unsere Gemeinde</a>
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<ul><li>constructed and added by <a href="//commons.wikimedia.org/wiki/User:Juergenk59" class="mw-redirect" title="User:Juergenk59">Jürgen Krause</a></li>
<li>colors according to <a href="https://es.wikipedia.org/wiki/Wikiproyecto:Ilustraci%C3%B3n/Taller_de_Her%C3%A1ldica_y_Vexilolog%C3%ADa/Convenciones_para_banderas#Colores" class="extiw" title="es:Wikiproyecto:Ilustración/Taller de Heráldica y Vexilología/Convenciones para banderas">FIAV</a></li></ul>