Techniques for prospective contact ranking of address book entries are described. In one embodiment, an apparatus may comprise a client front-end component operative to receive a prospective contact display prompt from a client application on a client device, the client application associated with a user account; receive an address book from the client device, the address book comprising a plurality of address book entries; and send the ordered prospective contact list to the client application on the client device; a prospective contact list component operative to determine a prospective contact list based on the address book, the prospective contact list comprising a plurality of prospective contacts; and a contact ranking component operative to determine a ranking weight for each of the plurality of prospective contacts; and generate an ordered prospective contact list by ordering the prospective contact list based on the ranking weights. Other embodiments are described and claimed.