From Meta, a Wikimedia project coordination wiki
Most of the larger projects have a specific page where copyright problems can be listed and resolved by community consensus. This page is intended as a central resource, linking to these pages by language. (The original idea for this page arose from the rewrite of the Wikimedia
Terms of use
in fall 2011.)
Where there is no specific page for copyright problems these can be raised on the general Community discussion pages linked from the "Community" menu on the page left hand side.
Wikipedia
Wikisource
Wikinews
It appears that English, Spanish, and French Wikinews do not have a notification page, but simply a template that may be applied.
Wikiversity
en:
en:Wikiversity:Copyright issues
Commons
commons:Template:Copyvio
(or just use the "nominate for deletion" link on the lower-left navigation)
