The Brahma sūtras (Sanskrit: ब्रह्म सूत्र) is a Sanskrit text, attributed to Badarayana, estimated to have been completed in its surviving form some time between 450 BCE and 200 CE. The text systematizes and summarizes the philosophical and spiritual ideas in the Upanishads. It is one of the foundational texts of the Vedānta school of Hindu philosophy.

The Brahma sutras consists of 555 aphoristic verses (sutras) in four chapters. These verses are primarily about the nature of human existence and universe, and ideas about the metaphysical concept of Ultimate Reality called Brahman.