Who wrote the Upanishads?

The Upanishads are a collection of ancient philosophical texts that form the core of Hindu philosophy. They were composed by different sages and scholars over a period of several centuries, from around 800 BCE to 200 BCE.

To find out the individual authors of the Upanishads, one can refer to the traditional Hindu scriptures, such as the Muktikā Upanishad, which gives a list of 108 Upanishads and the authors associated with them. Some of the Upanishads are attributed to well-known sages such as Yajnavalkya, Aitareya, and Brihadaranyaka, while others are anonymous or attributed to various lineages (e.g., ascribed to the teacher-disciple relationship).

It's important to note, however, that the Upanishads were primarily passed down orally from teacher to student in the ancient Indian tradition. Over time, they were compiled and written down by different scholars, which is why the exact authorship of many Upanishads is uncertain. The focus of the Upanishads is more on the wisdom and insights contained within, rather than on the individual authors themselves.