Alfred Barnard Basset FRS (25 July 1854 – 5 December 1930) was a British mathematician working on algebraic geometry, electrodynamics and hydrodynamics.
In fluid dynamics, the Basset force—also known as the Boussinesq–Basset force—describes history effects on the force experienced by a body in unsteady motion (relative to a viscous fluid).
He also worked on Bessel functions: the term Basset function was at one time used for modified Bessel functions of the second kind but is now obsolete.