Variational

Variational may refer to:


 * Calculus of variations, a field of mathematical analysis that deals with maximizing or minimizing functionals
 * Variational method (quantum mechanics), a way of finding approximations to the lowest energy eigenstate or ground state in quantum physics
 * Variational Bayesian methods, a family of techniques for approximating integrals in Bayesian inference and machine learning
 * Variational properties, properties of an organism relating to the production of variation among its offspring in evolutionary biology
 * Variationist sociolinguistics or variational sociolinguistics, the study of variation in language use among speakers or groups of speakers