Heavy Flavour Production at HERA

An overview of new measurements of heavy flavour production in e−p collisions done by the H1 and ZEUS experiments at HERA is presented. Various techniques are used to efficiently tag the heavy flavour in the events, thereby exploring different regions of phase space. Differential cross sections are measured both in photoproduction and in deep inelastic scattering. The predictions based on perturbative QCD calculations at next-to-leading order are found to generally agree with the charm production data, but to lie somewhat below the beauty data.