Rideau-Vanier Ward is a ward in the city of Ottawa, designated as Ward 12 and represented on Ottawa City Council. It was originally created in 1994 as a Ward on Regional Council.

Prior to Ottawa's amalgamation in 2001, the Ward was partly in the former city of Vanier and partly in Ottawa, in Bruyère-Strathcona Ward, its predecessor. This ward was created in 1994 from parts of By-Rideau Ward and St. George's Ward and was initially named Ward 5 until 1995 when it was given the Bruyère-Strathcona name.

By-St. George's Ward covered this area from 1972 to 1980 (excluding Vanier). It was created from the merging of By Ward and St. George's Ward, and abolished when it was split into St. George's Ward and By-Rideau Ward.

• ByWard Market
• Lowertown
• Sandy Hill
• Vanier