The Capitol Club of Oregon is an organization of professional advocates whose primary role is to provide information on behalf of their clients to Oregon legislators and state government officials.

Members of The Capitol Club enjoy the use of the Lobby Message Center during the Oregon Legislative Session. The Lobby Message Center, which is located in the basement of the State Capitol, serves as a satellite office for many members of the Capitol Club whose regular offices are not within close proximity to the Capitol. The Lobby Message Center provides an array of services including phone and fax, copying, printing, and delivery of documents and messages.

In addition to use of the Lobby Message Center, membership offers many other benefits. These include access to Capitol Club sponsored events, inclusion in The Capitol Club Directory, and access to the Capitol Club Web Directory.