South of the Upper Rotunda and opposite of the Ceremonial Entrance is the Members' Lobby. This rectangular room acts as the entryway into the Legislative Chamber and is used by the Sergeant-at-Arms, the Speaker, the Clerk, and other Table Officers during the Speaker’s Procession at the beginning of every sitting. The Lieutenant Governor also uses this entrance when attending to business in the Legislative Chamber.
The lobby itself is decorated with numerous plaques along its south and north walls. Every Member of the Legislative Assembly has their name engraved on a plaque, allowing all Members to be forever remembered in the halls of the Parliament Buildings. The Members' Lobby also contains a plaque in honour of Maria Grant and Cecilia Spofford, who fought for 30 years as members of the British Columbia Women's Temperance Union to gain women the right to vote in provincial elections.
Other than plaques, the Members' Lobby is home to several fine stained glass windows, known as the Latin Arts and Sciences series. The room was also built to include a ceramic mosaic floor that is presently protected under carpet. Like the mosaic of the Upper Rotunda, it is rich in decorative details.
In 1961, in order to protect the original ceramic tiles in the Members' Lobby from being replaced with linoleum, long-time political columnist James K. Nesbitt brought his sleeping bag and camped in the Members' Lobby, warding off workmen with a rifle once used by Governor Richard Blanshard. Nesbitt and the provincial archivist Willard Ireland were instrumental in generating support for both the protection and the revitalization of the Parliament Buildings.