Johanna Weber (8 August 1910 – 24 October 2014) was a German-born British mathematician and aerodynamicist. She is best known for her contributions to the development of the Handley Page Victor bomber and the Concorde.

Johanna Weber was born in a family of Walloon origin in Düsseldorf, Germany, on August 8, 1910. Her father died in the First World War. As a 'war orphan', Weber was eligible for financial support, and she attended a convent school.

In 1929, she began studies in chemistry and mathematics at the University of Cologne, but switched a year later to the University of Göttingen. She graduated with a first class honours degree in 1935, and then trained as a teacher for two years. As she did not join the Nazi Party, she was prohibited from taking a post as a teacher. Her remaining family, comprising her mother and sister, were in need of financial support, so she sought employment in the armaments industry.

Weber joined Krupp in Essen as a researcher in ballistics. Her work involved tedious mathematical computations using the Brunsviga mechanical calculators.

In 1939, Weber joined the Aerodynamics Research Institute (Aerodynamische Versuchsanstalt Göttingen) in Göttingen. She was part of a small theoretical team, and her initial training in aerodynamics consisted of wind tunnel corrections. Here she met and began her lifelong collaboration with Dietrich Küchemann.

Scientists at Institute had by then worked out a consistent theory of flow around an aircraft. This was, however, an approximation, using singularities to represent the vortices that generated lift, and Weber was given the task of improving it. She realised that some of her work overlapped with Küchemann's research on jet engine intakes. They teamed up, with Weber doing the theoretical development and wind tunnel testing, and Küchemann setting the direction of their research based on his consultation with manufacturers. Over the period of the Second World War, they created a substantial body of work.

Following the capture of Göttingen by the US Army in 1945, the city fell into the British occupation zone. The British paid Weber and Küchemann to compile a monograph of their researches. These would form the basis of their text Aerodynamics of Propulsion. They also encouraged German scientists to take up six month contracts at various defence facilities in the UK as part of the combined US-UK plan (Operation Paperclip and Operation Surgeon) to acquire German services and technologies. In October 1946, Küchemann joined the Aerodynamics department at the Royal Aircraft Establishment in Farnbourough, and persuaded Weber to join him. Both of them continued to renew their six-month contracts, although both remained classed as enemy aliens, until 1953 when both were naturalised as British citizens.

Weber, as the only woman among the German scientists, was accommodated at an RAE staff hostel. She joined the Low Speed Wind Tunnels division at the RAE, which was headed by Frances Bradfield. She began experimental work on air intakes under John Seddon.