Using schema.org Organization markup, you can indicate to our algorithms the location of your preferred logo. For example, a business whose homepage is www.example.com can add the following markup using visible on-page elements on their homepage: This example indicates to Google that this image is designated as the organization’s logo image for …

schema-logo.html

<div itemscope itemtype="http://schema.org/Organization">
  <a itemprop="url" href="http://www.example.com/">Home</a>
  <img itemprop="logo" src="http://www.example.com/logo.png" />
</div>