Magnoliidae

Magnoliidae is a botanical subclass name; it may refer to:


 * Magnoliids, a major group of basal angiosperms.
 * Magnoliidae sensu Chase & Reveal, a botanical subclass consisting of all angiosperms.
 * In the Dahlgren and Thorne systems, a group consisting of the Dicotyledons (Class Magnoliopsida in the Cronquist system)