We use a large, heterogeneous sample of local active galactic nuclei (AGN) that includes Seyfert 1s, Seyfert 2s and PG quasars to investigate for the first time the relation between black hole mass (MBH) and mid-infrared nuclear emission. We find a clear relation between MBH and 10μm nuclear luminosity for these local AGNs. There are no significant differences between type 1 and type 2 objects,...