A conversation member optimization apparatus includes: a conversation analyzing unit configured to recognize sound signals in a plurality of conferences held in the past for each conference and analyze conversations in the conferences for each conference; an estimating unit configured to estimate feature quantities in combinations of the members who participate in the conferences to be held on the basis of results analyzed by the conversation analyzing unit and in accordance with a member selecting instruction used to select members who participate in conferences to be held; and a member selecting unit configured to select the members on the basis of the results estimated by the estimating unit.