Sir Brian John Hoskins, CBE FRS, (born 17 May 1945) is a British dynamical meteorologist and climatologist based at the Imperial College London and the University of Reading.
A mathematician by training, his research has focused on understanding atmospheric motion from the scale of fronts to that of the Earth, using a range of theoretical and numerical models.
He is perhaps best known for his work on the mathematical theory of extratropical cyclones and frontogenesis, particularly through the use of potential vorticity.
He has also produced research across many areas of meteorology, including the Indian monsoon and global warming, recently contributing to the Stern review and the IPCC Fourth Assessment Report.