Ottawa–Rideau was a short lived provincial electoral district

Electoral district (Canada)

An electoral district in Canada, also known as a constituency or a riding, is a geographical constituency upon which Canada's representative democracy is based...

 in Ottawa, Ontario. It elected one member to the Legislative Assembly of Ontario

Legislative Assembly of Ontario

The Legislative Assembly of Ontario , is the legislature of the Canadian province of Ontario, and is the second largest provincial legislature of Canada...

. It was created in 1987 and was abolished in 1999 into Ottawa South

Ottawa South (provincial electoral district)

Ottawa South is a riding in the Canadian province of Ontario, in the city of Ottawa. It is represented in the Legislative Assembly of Ontario by the Premier of Ontario, Dalton McGuinty....

, Nepean–Carleton, Ottawa West–Nepean and Ottawa Centre

Ottawa Centre (provincial electoral district)

Ottawa Centre is an urban provincial electoral district in Ontario, Canada that has been represented in the Legislative Assembly of Ontario since 1968...

.

The riding included all of pre-amalgamation Ottawa south of Walkley Road

Walkley Road

Walkley Road is a major road in Ottawa, Ontario, Canada. It runs from Riverside Drive to Ramseyville Road . It is mostly a 4-lane divided road which runs through both residential and industrial areas of the southern part of urban Ottawa.-External link/Reference:*...

 south of Baseline Road

Baseline Road (Ottawa)

Baseline Road is a road in Ottawa, Ontario, Canada.Baseline runs from Richmond Road east in a straight line until it ends at the Heron Road Bridge over the Rideau River and Rideau Canal when it becomes Heron Road. Before the 2001 City of Ottawa amalgamation, Baseline formed the border of the city...

. It also included part of the city of Gloucester

Gloucester, Ontario

Gloucester is a suburb of and within the City of Ottawa. Gloucester Township was established in 1792 and originally included lands east of the Rideau River from the Ottawa River south to Manotick. It was incorporated as a township in 1850 and became a city in 1981...

 north of Leitrim Road between Limebank Road and Conroy Road. It also included part of the city of Nepean

Nepean, Ontario

- Recent quantity of snow :- History :Nepean Township, originally known as Township D, was established in 1792 and originally included what is now the central area of Ottawa west of the Rideau River. Jehiel Collins, from Vermont, is believed to have been the first person to settle in Nepean...

 northeast of this line: Black Rapids Creek to Woodroffe Avenue

Woodroffe Avenue (Ottawa)

Woodroffe Avenue is the major north-south arterial road in Ottawa, Ontario, Canada's west end. It runs south from the Ottawa River Parkway through Baseline Road to Prince of Wales Drive towards the communities of Manotick and Barrhaven. The road runs through the heart of Nepean in Ottawa's west end...

 to CN railway to Merivale Road.

The riding elected two members of the Legislative Assembly: Yvonne O'Neill

Yvonne O'Neill

Yvonne O'Neill was a politician in Ontario, Canada. She was a Liberal member of the Legislative Assembly of Ontario from 1987 to 1995.-Early years and education:...

, a Liberal

Ontario Liberal Party

The Ontario Liberal Party is a provincial political party in the province of Ontario, Canada. It has formed the Government of Ontario since the provincial election of 2003. The party is ideologically aligned with the Liberal Party of Canada but the two parties are organizationally independent and...

 from 1987 to 1995 and then Garry Guzzo

Garry Guzzo

Garry Guzzo is a politician in Ontario, Canada. He was a Progressive Conservative member of the Legislative Assembly of Ontario from 1995 to 2003....

, a Progressive Conservative from 1995 to 1999.