I will discuss the Renormalization Group as a useful tool in quantum gravity models: Constructing a quantum field theory of the metric, the Renormalization Group can be used towards the ultraviolet, where indications for asymptotic safety in gravity can be found. I will explain how the coupling to matter gives us a way to test this model: The Standard Model matter content turns out to be compatible with asymptotic safety – within a certain approximation – while certain extensions like the Minimal Supersymmetric Standard Model, are not. I will also explain how the Renormalization Group can be used in discrete approaches to quantum gravity, such as matrix and tensor models, where it provides a way to search for the continuum limit.