印度-澳洲板块（英语：Indo-Australian Plate，或印澳板块）是两块板块的合称，其中包含了澳洲大陆及周围海域，并向西北延伸，涵盖印度次大陆与附近水域。此板块可分成较大的澳洲板块与较小的印度板块，两者之间为一道低度活动边界。两个板块在5千5百万到5千万年前融合在一起，在此以前两者为分离状态。

于澳洲西南部Mount Barren群地层南缘的尤冈克拉通（Yilgarn Craton，克拉通是大陆内部古老且稳定的陆块）所做的锆石定年分析显示，大约在1696±7百万年前，皮尔巴拉-尤冈（Pilbara-Yilgarn）与尤冈-高勒（Yilgarn-Gawler）两个克拉通发生碰撞，聚集成为原始的澳洲大陆。

The Australian Plate is a major tectonic plate in the eastern and, largely, in the southern hemispheres. Originally a part of the ancient continent of Gondwana, Australia remained connected to India and Antarctica until approximately 100 million years ago when India broke away and began moving north. Australia and Antarctica began rifting 85 million years ago and completely separated roughly 45 million years ago The Australian plate later fused with the adjacent Indian Plate beneath the Indian Ocean to form a single Indo-Australian Plate. However, recent studies suggest that the two plates have once again split apart and have been separate plates for at least 3 million years and likely longer. The Australian plate includes the continent of Australia, including Tasmania, as well portions of New Guinea, New Zealand, and the Indian Ocean basin.