MediaWiki does not have a built-in option to hide the main page title. Instead you must use JavaScript or CSS.
In 1.9 and above, you can rely on CSS to hide it. Replace "Main_Page" with the appropriate page name, here with spaces replaced by underscores.
Code: Select all
body.page-Main_Page h1.firstHeading { display:none; }
If that doesn't work, look at the HTML source code to find the correct class to replace "page-Main_Page" with:
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<body class="mediawiki ns-0 ltr page-Some_title">
If no such class exists, then you cannot use this feature. You may be using a custom or outdated skin.