  These lecture notes provide an introduction to the theoretical concepts of
flavour physics and CP violation, based on a series of lectures given at the
ESHEP 2016 summer school. In the first lecture we review the basics of flavour
and CP violation in the Standard Model. The second lecture is dedicated to the
phenomenology of K and B meson decays, where we focus on a few representative
observables. In the third lecture we give an introduction to flavour physics
beyond the Standard Model, both within the framework of Minimal Flavour
Violation and beyond.
