Last modified: 2014-06-19 13:02:18 UTC
For a few releases now we have iwbacklinks. However, while it is exposed in the API, there is no special page for it. This would be similar to Special:LinkSearch and Special:WhatLinksHere from the user perspective in that it takes a target (in this case an interwiki prefix and title), and paginates through pages on the current wiki that link to it.