Naidanshu were in charge of judging trials dealing with land-related issues in hikitsukekata or naidankata (both are offices of adjudication) of the Muromachi bakufu (Japanese feudal government headed by a shogun).
内談衆（ないだんしゅう）とは、室町幕府の引付方あるいは内談方において所務沙汰の審議にあたった構成員。