This page lists religious institutes of the Catholic Church that are now defunct. This refers to institutes that have merged, been suppressed, disbanded or died out.
The list given here includes not only examples of pontifical-right institutes but also some that are only of diocesan right. It includes even some associations formed with a view to becoming religious institutes but were never canonically erected even on the diocesan level.
The list does not distinguish between institutes that historically would be classified either as "orders" or as "congregations."
References
List of defunct Catholic religious institutes Wikipedia(Text) CC BY-SA