| 2026-05-24 | City west of Montreal |
| 2025-07-28 | Canada's capital |
| 2025-07-15 | Capital city on the banks of the Rideau River |
| 2025-07-08 | Capital of Canada |
| 2025-05-25 | Senator's home |
| 2024-02-04 | Canadian Tulip Festival location |
| 2023-10-28 | Home of a parliament on Parliament Hill |
| 2023-09-24 | With 22-Across, world capital selected by Queen Victoria |
| 2022-12-24 | Pontiac, for one |
| 2021-11-18 | Chief tributary of the St. Lawrence River |
| 2021-08-08 | Capital on a 126-mile-long canal that's used as a skating rink in the winter |
| 2020-11-30 | Capital of 71-Across |
| 2019-08-14 | Capital whose name derives from the Ojibwa word for "traders" |
| 2019-07-27 | World capital on the Rideau Canal |
| 2017-04-13 | Major tributary of the St. Lawrence |
| 2016-08-01 | Canada's capital |
| 2016-04-05 | Home of the National Gallery of Canada |
| 2016-03-09 | Ontario/Quebec border river |
| 2014-12-14 | Capital on a river of the same name |
| 2014-05-20 | Ontario's second-largest city |
| 2013-12-27 | Parliamentary home |
| 2013-10-20 | Tulip festival city |
| 2013-09-18 | Home of the Senators |
| 2013-04-14 | Pontiac's tribe |
| 2013-03-27 | Pontiac's tribe |
| 2013-02-25 | Canadian capital |
| 2012-02-23 | Senator's home |
| 2011-12-15 | Capital whose name comes from an Algonquin word for "to trade" |
| 2010-11-05 | City that's home to Parliament Hill |
| 2010-07-01 | Pontiac, for one |
| 2010-05-07 | National capital on a river of the same name |
| 2007-09-03 | Canada's capital |
| 2007-04-14 | Pontiac, for one |
| 2006-09-17 | Senator's locale |
| 2005-12-29 | Chief Pontiac's tribe |
| 2005-07-17 | Capital city on a river of the same name |
| 2003-02-23 | Pontiac, e.g. |
| 2002-12-31 | Chief Pontiac, e.g. |
| 2002-10-11 | St. Lawrence feeder |
| 2002-04-20 | Pontiac, e.g. |
| 2002-01-09 | Seat of Parliament |
| 2000-04-24 | Canada's capital |
| 1999-08-27 | Illinois town, site of the first Lincoln-Douglas debate |
| 1999-04-21 | Where Carleton University is |
| 1998-05-02 | Senators' home |
| 1997-10-22 | Chrétien's capital |
| 1997-02-07 | Capital on the Rideau Canal |
| 1995-05-21 | Ontario-Quebec border river |
| 1995-02-03 | Chrétien's capital |
| 1994-12-06 | N.H.L. city |