# List of Ontario federal electoral districts

The Ontario federal electoral districts each elect one representative to the House of Commons. These districts are defined by Elections Canada. Their boundaries are also used for provincial electoral districts, with exceptions in Northern Ontario.

## Current electoral districts

The following electoral districts are currently represented in the House of Commons.
| Title | Population | Member |
| Ajax | 137,217 | Mark Holland |
| Algoma—Manitoulin—Kapuskasing | 79,483 | Carol Hughes |
| Aurora—Oak Ridges—Richmond Hill | 115,227 | Tony Van Bynen |
| Barrie—Innisfil | 109,286 | John Brassard |
| Barrie—Springwater—Oro-Medonte | 100,788 | Doug Shipley |
| Bay of Quinte | 109,735 | Neil Ellis |
| Beaches—East York | 109,468 | Nathaniel Erskine-Smith |
| Brampton Centre | 102,270 | Ramesh Sangha |
| Brampton East | 122,000 | Maninder Sidhu |
| Brampton North | 118,180 | Ruby Sahota |
| Brampton South | 121,188 | Sonia Sidhu |
| Brampton West | 130,000 | Kamal Khera |
| Brantford—Brant | 130,296 | Larry Brock |
| Bruce—Grey—Owen Sound | 106,475 | Alex Ruff |
| Burlington | 120,569 | Karina Gould |
| Cambridge | 111,693 | Bryan May |
| Carleton | 102,918 | Pierre Poilievre |
| Chatham-Kent—Leamington | 111,866 | Dave Epp |
| Davenport | 108,475 | Julie Dzerowicz |
| Don Valley East | 93,007 | Yasmin Ratansi |
| Don Valley North | 103,073 | Han Dong |
| Don Valley West | 99,820 | Rob Oliphant |
| Dufferin—Caledon | 116,341 | Kyle Seeback |
| Durham | 115,395 | Erin O'Toole |
| Eglinton—Lawrence | 113,150 | Marco Mendicino |
| Elgin—Middlesex—London | 110,109 | Karen Vecchio |
| Essex | 120,477 | Chris Lewis |
| Etobicoke Centre | 114,910 | Yvan Baker |
| Etobicoke—Lakeshore | 115,437 | James Maloney |
| Etobicoke North | 117,601 | Kirsty Duncan |
| Flamborough—Glanbrook | 97,081 | David Sweet |
| Glengarry—Prescott—Russell | 106,240 | Francis Drouin |
| Guelph | 121,688 | Lloyd Longfield |
| Haldimand—Norfolk | 108,051 | Diane Finley |
| Haliburton—Kawartha Lakes—Brock | 110,182 | Jamie Schmale |
| Hamilton Centre | 101,932 | Matthew Green |
| Hamilton East—Stoney Creek | 107,786 | Bob Bratina |
| Hamilton Mountain | 103,615 | Scott Duvall |
| Hamilton West—Ancaster—Dundas | 109,535 | Filomena Tassi |
| Hastings—Lennox and Addington | 92,528 | Derek Sloan |
| Humber River—Black Creek | 108,198 | Judy Sgro |
| Huron—Bruce | 104,842 | Ben Lobb |
| Kanata—Carleton | 100,846 | Karen McCrimmon |
| Kenora | 55,977 | Eric Melillo |
| Kingston and the Islands | 116,996 | Mark Gerretsen |
| King—Vaughan | 109,235 | Deb Schulte |
| Kitchener Centre | 102,433 | Raj Saini |
| Kitchener—Conestoga | 93,827 | Tim Louis |
| Kitchener South—Hespeler | 97,673 | Marwan Tabbara |
| Lambton—Kent—Middlesex | 105,919 | Lianne Rood |
| Lanark—Frontenac—Kingston | 98,409 | Scott Reid |
| Leeds-Grenville-Thousand Islands and Rideau Lakes | 100,546(2016) | Michael Barrett |
| London—Fanshawe | 119,334 | Lindsay Mathyssen |
| London North Centre | 118,079 | Peter Fragiskatos |
| London West | 119,090 | Kate Young |
| Markham—Stouffville | 109,780 | Helena Jaczek |
| Markham—Thornhill | 99,078 (2016) | Mary Ng |
| Markham—Unionville | 123,318 | Bob Saroya |
| Milton | 88,065 | Adam van Koeverden |
| Mississauga Centre | 118,756 | Omar Alghabra |
| Mississauga East—Cooksville | 121,792 | Peter Fonseca |
| Mississauga—Erin Mills | 117,199 | Iqra Khalid |
| Mississauga—Lakeshore | 118,893 | Sven Spengemann |
| Mississauga—Malton | 118,046 | Navdeep Bains |
| Mississauga—Streetsville | 118,757 | Gagan Sikand |
| Nepean | 104,775 | Chandra Arya |
| Newmarket—Aurora | 109,457 | Tony Van Bynen |
| Niagara Centre | 105,860 | Vance Badawey |
| Niagara Falls | 128,357 | Tony Baldinelli |
| Niagara West | 86,533 | Dean Allison |
| Nickel Belt | 90,962 | Marc Serré |
| Nipissing—Timiskaming | 90,996 | Anthony Rota |
| Northumberland—Peterborough South | 107,840 | Phillip Lawrence |
| Oakville | 182,520 | Anita Anand |
| Oakville North—Burlington | 114,378 | Pam Damoff |
| Orléans | 119,247 | Marie-France Lalonde |
| Oshawa | 159,458 | Colin Carrie |
| Ottawa Centre | 113,619 | Catherine McKenna |
| Ottawa South | 121,894 | David McGuinty |
| Ottawa—Vanier | 110,999 | Mona Fortier |
| Ottawa West—Nepean | 111,881 | Anita Vandenbeld |
| Oxford | 108,656 | Dave MacKenzie |
| Parkdale—High Park | 105,103 | Arif Virani |
| Parry Sound-Muskoka | 91,263 | Scott Aitchison |
| Perth Wellington | 104,912 | John Nater |
| Peterborough—Kawartha | 115,269 | Maryam Monsef |
| Pickering—Uxbridge | 109,344 | Jennifer O'Connell |
| (federal electoral district)|Renfrew—Nipissing—Pembroke | 102,537 | Cheryl Gallant |
| Richmond Hill | 108,658 | Majid Jowhari |
| St. Catharines | 110,596 | Chris Bittle |
| Sarnia—Lambton | 106,293 | Marilyn Gladu |
| Sault Ste. Marie | 82,052 | Terry Sheehan |
| Scarborough—Agincourt | 104,499 | Jean Yip |
| Scarborough Centre | 108,826 | Salma Zahid |
| Scarborough-Guildwood | 101,914 | John McKay |
| Scarborough North | 101,080 | Shaun Chen |
| Scarborough—Rouge Park | 102,646 | Gary Anandasangaree |
| Scarborough Southwest | 106,733 | Bill Blair |
| Simcoe—Grey | 116,307 | Terry Dowdall |
| Simcoe North | 108,672 | Bruce Stanton |
| Spadina—Fort York | 82,480 | Adam Vaughan |
| Stormont—Dundas—South Glengarry | 100,913 | Eric Duncan |
| Sudbury | 92,048 | Viviane Lapointe |
| Thornhill | 110,427 | Peter Kent |
| Thunder Bay—Rainy River | 82,984 | Don Rusnak |
| Thunder Bay—Superior North | 82,827 | Patty Hajdu |
| Timmins-James Bay | 83,104 | Charlie Angus |
| Toronto Centre | 103,805 | Bill Morneau |
| Toronto—Danforth | 104,017 | Julie Dabrusin |
| Toronto—St. Paul's | 103,983 | Carolyn Bennett |
| University—Rosedale | 98,605 | Chrystia Freeland |
| Vaughan—Woodbridge | 105,450 | Francesco Sorbara |
| Waterloo | 110,134 | Bardish Chagger |
| Wellington—Halton Hills | 115,880 | Michael Chong |
| Whitby | 122,022 | Ryan Turnbull |
| Willowdale | 109,680 | Ali Ehsassi |
| Windsor—Tecumseh | 115,528 | Irek Kusmierczyk |
| Windsor West | 118,973 | Brian Masse |
| York Centre | 100,277 | Michael Levitt |
| York—Simcoe | 94,616 | Scot Davidson |
| York South—Weston | 116,606 | Ahmed Hussen |

### Notes

* Electoral districts and members per Elections Canada for 2015, 2017 and 2018.
* Populations are from the 2011 Census except where noted.