All Telerik Components for ASP.NET MVC support right-to-left languages like Arabic, Persian and Hebrew.
To enable the RTL mode, you should:
place the component in a container with the t-rtl class:
<div class="t-rtl">
<%= Html.Telerik().Upload()
.Name("attachments")
%>
</div>
include the telerik.rtl.css file in the document <head>,
either through the StyleSheetRegistrar or through a HTML <link />
element
For more information, see the help topic on RTL support.