20th Parliament of Ontario

The 20th Legislative Assembly of Ontario was in session from October 6, 1937, until June 30, 1943, just prior to the 1943 general election. The majority party was the Ontario Liberal Party led by Mitchell Hepburn.

In 1938, the title "Member of Provincial Parliament", abbreviated as "MPP", was officially adopted by the members of the legislative assembly.

Hepburn resigned as Premier in October 1942, remaining party leader, and Gordon Daniel Conant became Premier. In 1943, Harry Nixon became both party leader and Premier after a leadership convention was held for the provincial Liberal party.

Norman Otto Hipel served as speaker for the assembly until September 2, 1938. James Howard Clark replaced Hipel as speaker.

Members elected to the Assembly
Italicized names indicate members returned by acclamation.

{{legend|#9999FF|Addington: William David Black}} {{legend|#EA6D6A|Algoma—Manitoulin: Wilfred Lynn Miller}} {{legend|#9999FF|Beaches: Thomas Alexander Murphy}} {{legend|#EA6D6A|Bellwoods: Arthur Wentworth Roebuck}} {{legend|#EA6D6A|Bracondale: Lionel Pretoria Conacher}} {{legend|#EA6D6A|Brant: Harry Corwin Nixon}} {{legend|#DCDCDC|Brantford: Morrison Mann MacBride (I-Lib)}} {{legend|#EA6D6A|Bruce: John William Sinclair}} {{legend|#9999FF|Carleton: Adam Holland Acres}} {{legend|#EA6D6A|Cochrane North: Joseph-Anaclet Habel}} {{legend|#EA6D6A|Cochrane South: Charles Vincent Gallagher}} {{legend|#9999FF|Dovercourt: William Duckworth}} {{legend|#9999FF|Dufferin—Simcoe: Alfred Wallace Downer}} {{legend|#EA6D6A|Durham: Cecil George Mercer}} {{legend|#EA6D6A|Eglinton: Harold James Kirby}} {{legend|#EA6D6A|Elgin: Mitchell Frederick Hepburn}} {{legend|#EA6D6A|Essex North: Adélard Charles Trottier}} {{legend|#EA6D6A|Essex South: Charles George Fletcher}} {{legend|#9999FF|Fort William: Franklin Harford Spence}} {{legend|#EA6D6A|Glengarry: Edmund MacGillivray}} {{legend|#9999FF|Grenville—Dundas: George Holmes Challies}} {{legend|#66CC00|Grey North: Roland Patterson (L-Prog)}} {{legend|#66CC00|Grey South: Farquhar Robert Oliver (UFO)}} {{legend|#EA6D6A|Haldimand—Norfolk: Eric William Blake Cross}} {{legend|#66CC00|Halton: Thomas Aston Blakelock (L-Prog)}} {{legend|#EA6D6A|Hamilton Centre: William Frederick Schwenger}} {{legend|#EA6D6A|Hamilton East: John P. MacKay}} {{legend|#EA6D6A|Hamilton—Wentworth: Thomas Baker McQuesten}} {{legend|#9999FF|Hastings East: Harold Edward Welsh}} {{legend|#9999FF|Hastings West: Richard Duke Arnott}}

{{legend|#9999FF|High Park: William Alexander Baird}} {{legend|#EA6D6A|Huron: James Simpson Ballantyne}} {{legend|#EA6D6A|Huron—Bruce: Charles Alexander Robertson}} {{legend|#EA6D6A|Kenora: Peter Heenan}} {{legend|#66CC00|Kent East: Douglas Munro Campbell (L-Prog)}} {{legend|#EA6D6A|Kent West: Arthur St. Clair Gordon}} {{legend|#9999FF|Kingston: Thomas Ashmore Kidd}} {{legend|#EA6D6A|Lambton East: Milton Duncan McVicar}} {{legend|#EA6D6A|Lambton West: William Guthrie}} {{legend|#9999FF|Lanark: George Henry Doucett}} {{legend|#9999FF|Leeds: Walter Bain Reynolds}} {{legend|#EA6D6A|Lincoln: Archibald Judson Haines}} {{legend|#EA6D6A|London: Archibald Stuart Duncan}} {{legend|#EA6D6A|Middlesex North: John Willard Freeborn}} {{legend|#EA6D6A|Middlesex South: Charles Maitland MacFie}} {{legend|#EA6D6A|Muskoka—Ontario: James Francis Kelly}} {{legend|#EA6D6A|Niagara Falls: William Houck}} {{legend|#EA6D6A|Nipissing: Joseph Elie Cholette}} {{legend|#EA6D6A|Northumberland: Harold Norman Carr}} {{legend|#EA6D6A|Ontario: Gordon Daniel Conant}} {{legend|#EA6D6A|Ottawa East: Paul Leduc}} {{legend|#9999FF|Ottawa South: George Harrison Dunbar}} {{legend|#EA6D6A|Oxford: Patrick Michael Dewan}} {{legend|#9999FF|Parkdale: Fred McBrien}} {{legend|#EA6D6A|Parry Sound: Milton Taylor Armstrong}} {{legend|#9999FF|Peel: Thomas Laird Kennedy}} {{legend|#EA6D6A|Perth: William Angus Dickson}} {{legend|#EA6D6A|Peterborough: Alexander Leslie Elliott}} {{legend|#EA6D6A|Port Arthur: Charles Winnans Cox}} {{legend|#EA6D6A|Prescott: Aurélien Bélanger}}

{{legend|#9999FF|Prince Edward—Lennox: James de Congalton Hepburn}} {{legend|#EA6D6A|Rainy River: Randolph George Croome}} {{legend|#EA6D6A|Renfrew North: John Courtland Bradley}} {{legend|#EA6D6A|Renfrew South: Thomas Patrick Murray}} {{legend|#9999FF|Riverdale: William Summerville}} {{legend|#EA6D6A|Russell: Romeo Bégin}} {{legend|#EA6D6A|St. Andrew: John Judah Glass}} {{legend|#EA6D6A|St. David: Allan Austin Lamport}} {{legend|#EA6D6A|St. George: Ian Thomas Strachan}} {{legend|#EA6D6A|St. Patrick: Frederick Fraser Hunter}} {{legend|#EA6D6A|Sault Ste. Marie: Richard McMeekin}} {{legend|#EA6D6A|Simcoe Centre: Leonard Jennett Simpson}} {{legend|#9999FF|Simcoe East: William Finlayson}} {{legend|#EA6D6A|Stormont: Fergus Beck Brownridge}} {{legend|#EA6D6A|Sudbury: James Cooper}} {{legend|#EA6D6A|Timiskaming: William Glennie Nixon}} {{legend|#9999FF|Victoria: Leslie Frost}} {{legend|#EA6D6A|Waterloo North: Justus Albert Smith}} {{legend|#EA6D6A|Waterloo South: Norman Otto Hipel}} {{legend|#EA6D6A|Welland: Edward James Anderson}} {{legend|#EA6D6A|Wellington North: Ross Atkinson McEwing}} {{legend|#EA6D6A|Wellington South: James Harold King}} {{legend|#EA6D6A|Wentworth: George Henry Bethune}} {{legend|#EA6D6A|Windsor—Sandwich: James Howard Clark}} {{legend|#EA6D6A|Windsor—Walkerville: David Arnold Croll}} {{legend|#9999FF|Woodbine: Goldwin Corlett Elgie}} {{legend|#9999FF|York East: George Stewart Henry}} {{legend|#EA6D6A|York North: Morgan Baker}} {{legend|#9999FF|York South: Leopold Macaulay}} {{legend|#EA6D6A|York West: William James Gardhouse}}