Asteridae is a botanical subclass of flowering plants in class Dicotyledon or Magnoliopsida. Like all other dicotyledons their seed contains two embryonic leaves or cotyledons (hence the class name).

The following orders are found within Asteridae:

• Gentianales
• Solanales
• Lamiales
• Callitrichales
• Plantaginales
• Scrophulariales
• Campanulales
• Rubiales
• Dipsacales
• Calycerales
• Asterales