东洋界又称为印度马来亚区，是东南亚的动物地理分区。 东洋界以前大都由森林覆盖，主要是热带和亚热带湿润阔叶林。东洋界的热带雨林的树木大多是龙脑香科。 分布在喜马拉雅山以南，秦岭淮河以南，华莱士线以西 它包括了:

The Indomalaya ecozone is one of the eight ecozones. It extends across most of South and Southeast Asia and into the southern parts of East Asia.

Also called the Oriental Realm by biogeographers, Indomalaya extends from Afghanistan through the Indian subcontinent and Southeast Asia to lowland southern China, and through Indonesia as far as Java, Bali, and Borneo, east of which lies the Wallace line, the ecozone boundary named after Alfred Russel Wallace which separates Indomalaya from Australasia. Indomalaya also includes the Philippines, lowland ******, and Japan's Ryukyu Islands.