Wikimedia Commons has media related to Commons metatemplates.

Metatemplates are templates primarily used with, within or to create other templates.

The pages listed in this category are meant to be metatemplates.

This page is part of Wikipedia's administration and not part of the encyclopedia.

Further template category notes

This category contains pages in the template namespace. It should not be used to categorize articles or pages in other namespaces.

To add a template to this category:

If the template has a separate documentation page (usually called "Template:template name/doc"), add
[[Category:Wikipedia metatemplates]]
to the <includeonly> section at the bottom of that page. Otherwise, add
<noinclude>[[Category:Wikipedia metatemplates]]</noinclude>
to the end of the template code, making sure it starts on the same line as the code's last character.