Terence James Stannus Gray (14 September 1895 – 5 January 1986), better known by the pen name Wei Wu Wei, was a 20th-century Taoist philosopher, writer, Egyptologist and theatre producer.

Gray was born in Felixstowe, Suffolk, England on 14 September 1895, into a well-established Anglo-Irish family. He was educated at numerous prestigious institutions including Eton and Oxford University.

After he left his theatrical career, his thoughts turned towards philosophy and metaphysics. This led to a period of travel throughout Asia, including time spent at Ramana Maharshi's ashram in Tiruvannamalai, India. Between the years 1958 and 1974 a series of eight books appeared attributed to the mysterious 'Wei Wu Wei'. These works draw on a variety of sources, including Taoism, specifically the texts attributed to Lao Tzu and Chuang Tzu, Buddhism, especially The Heart, Diamond and Lankavatara Sutras, and Chan Buddhism as taught by Hui Neng, Huang Po, Hui Hai, etc., as well as the teachings of Padmasambhava and Sri Ramana Maharshi, among others.