Theo Moorman was born Theodora Moorman in Leeds in 1907. After her father's death in 1919 she moved with her mother to Oxley Hall, a residence for women at the University of Leeds. Moorman trained at the Central School of Arts and Crafts in London between 1925-1928, where she joined Walter Taylor's hand-weaving class.
She travelled extensively during this time; and after her training got a job weaving rugs in the Craft Studio at Heal and Sons Ltd run by Jeanetta Cochrane. In 1930 she took a room in Pimlico and while working freelance, continuing to weave cushion covers for Heals. She also wove rugs, curtains, wraps and stoles and private commissions.
In 1932 after a period in hospital, recovering from typhoid contracted while in Cairo, she moved with her mother to a small house in Hampstead Garden Suburb where she used the ground floor for her weaving workshop. She joined the Red Rose Guild and began to show at their exhibitions. She worked at Warner and Sons Ltd, Braintree between 1934-1939 producing hand-woven patterns for eventual power loom weaving, using both natural and synthetic yarns.
During the World War II she worked for the Ministry of Aircraft Production developing fabrics for camera shutters. From 1943 until 1953 she worked as Assistant Regional Director for the Council for the Encouragement of Music and the Arts (later the Arts Council), moving with her mother to Leeds. A legacy enabled her to set up a weaving studio again and she spent a year experimenting producing richly textured fabrics and brocaded patterns.
In 1957 she left Leeds for Painswick, Gloucestershire and continued to experiment with a variety of natural and synthetic materials, developing the so called 'space tapestries' in 1963. She became a member of the Guild of Gloucestershire Craftsmen in 1966 and in 1968 began what was to become a regular round of teaching and lecturing in the USA and Canada (as well as within the UK) until 1982. She was made the Vice-President of the Association of Guilds of Weavers, Spinners and Dyers in 1969 and in 1970 the Chairman of the Guild of Gloucestershire Craftsmen. In 1975 she started experimenting with the production of small woven objects and in 1977 was awarded the MBE for services to weaving. In 1982 she spoke at the National Woolcrafts Festival in New Zealand and combined this with a travel tour. She completed numerous ecclesiastical commissions.
In 1985 the Theo Moorman Charitable Trust was formed and in 1987 an eightieth birthday exhibition organised at the Oxford Gallery where all works were sold.