Annalisa Buffa (born 14 February 1973)[1] is an Italian mathematician, specializing in numerical analysis and partial differential equations (PDE).

She is a professor of mathematics at EPFL (École Polytechnique Fédérale de Lausanne) and holds the Chair of Numerical Modeling and Simulation.

[1] Buffa's research deals with a wide range of topics in PDEs and numerical analysis:[6] "isogeometric analysis, fully compatible discretization of PDEs, linear and non linear elasticity, contact mechanics, integral equations on non-smooth manifolds, functional theory for Maxwell equations in non-smooth domains, finite element techniques for Maxwell equations, non-conforming domain decomposition methods, asymptotic analysis, stabilization techniques for finite element discretizations.

In 2015 she was awarded the Collatz Prize [de] "for her spectacular use of deep and sophisticated mathematical concepts to obtain outstanding contributions to the development of computer simulations in science and industry" (Laudatio).

[8] In 2014, she was an Invited Speaker at the International Congress of Mathematicians in Seoul with talk Spline differential forms.