Supermassive Black Holes Studies in the Time Domain with LSST Carole Mundell, University of Bath LSST will revolutionise our view of accreting supermassive black holes in the Universe and their role in galaxy formation and evolution. The goal of this talk is to frame the discussion of AGN studies in the time-domain, including challenges and opportunities. I will review different classes of Active Galactic Nuclei and their currently known optical variability properties, before leading on to the range of variability LSST may probe from high-energy flares in known accreting systems to one-off transient events such as tidal disruption events. I will also discuss other facilities that will be operating or coming online during the LSST era and look at some of the triggering and followup issues associated with the multi-messenger era in which LSST will operate.