The display name of the page in Mediawiki can be changed using the magic word:{{DISPLAYTITLE:name_with_underscore}}But the list of pages on the category page displays the original name (without the underscore in my example).Is there a way to display a custom name in this list?
Custom page title in list of pages in a category
mediawiki
The other answers are incorrect. What you request is not yet possible, though it's a long-standing feature request that will probably be solved eventually.Provide a way to alter page titles in category listings, e.g. via display titleRequest to show {{DISPLAYTITLE}} as page link on category pages