How can I programmatically disable Gutenberg query block patterns?

You can disable all “experimental block patterns” including the query block patterns by adding a filter: add_action( ‘init’, function() { add_filter( ‘block_editor_settings_all’, function ($editor_settings) { $editor_settings[‘__experimentalBlockPatterns’] = []; return $editor_settings; } ); }); You can see all editor settings (that you could disable with this filter) in this comment: https://developer.wordpress.org/reference/hooks/block_editor_settings_all/#comment-5661