A ridesharing management device includes: a communicator configured to communicate with a plurality of terminal devices used by a plurality of users; an acquirer configured to acquire pick-up requests of the plurality of users in which a use condition including at least a desired pick-up place is defined; and a service manager configured to perform a grouping process of grouping users associated with the use condition and an allocating process of allocating a vehicle which is able to be used by the grouped users according to the use condition included in the pick-up request and configured to determine a pick-up place at which the allocated vehicle is picked up so that the grouped users are able to be assembled according to results of the grouping process and the allocating process.