Mokkan (also read as Bokkan) is one of supplementary punishments in the ritsuryo system (a system of centralized government based on the ritsuryo code), and it refers to the confiscation of corpus or property by the authority.
没官（もっかん/ぼっかん）とは、律令法において科された付加刑の1つで、人身または財物を官が没収すること。