Searches for Dark Matter with the NA62 and NA64 experiments at CERN are presented. In the NA62 experiment the search is in the decays $A^\prime \to \mu \mu$ and $A^\prime \to e e$, where $A^\prime$ is a new vector particle corresponding to a vector mediator field. The NA64 experiment looks for events with invisible decays of $A^\prime$ and thus having large missing energy.
New upper limits have been set on models with such a vector mediator field.