Common Unicode Characters for English Web‐pages

XML/XHTML/HTML entity character name character
& ampersand &
&#60; less than sign <
&#62; greater than sign >
&#34; plain double quotes "
&#39; plain single quotes '
&#169; copyright ©
&#8208; hyphen
&#8211; en dash
&#8212; em dash
&#8216; &#8217; single quotation marks ‘ ’
&#8220; &#8221; double quotation marks “ ”

See the Wikipedia article, “List of XML and HTML character entity references” for more.