| Election Name: | 1950 South Australian state election |
| Country: | South Australia |
| Type: | parliamentary |
| Ongoing: | no |
| Previous Election: | 1947 South Australian state election |
| Previous Year: | 1947 |
| Next Election: | 1953 South Australian state election |
| Next Year: | 1953 |
| Seats For Election: | All 39 seats in the South Australian House of Assembly 20 seats were needed for a majority |
| Leader1: | Thomas Playford |
| Leader Since1: | 5 November 1938 |
| Party1: | Liberal and Country League |
| Leaders Seat1: | Gumeracha |
| Percentage1: | 51.3% |
| Swing1: | 0.7 |
| Last Election1: | 23 seats |
| Seats1: | 23 seats |
| Seat Change1: | 0 |
| Leader2: | Mick O'Halloran |
| Leader Since2: | 10 October 1949 |
| Party2: | Australian Labor Party (South Australian Branch) |
| Leaders Seat2: | Frome |
| Percentage2: | 48.7% |
| Swing2: | 0.7 |
| Last Election2: | 13 seats |
| Seats2: | 12 seats |
| Seat Change2: | 1 |
| Premier | |
| Before Election: | Thomas Playford |
| Before Party: | Liberal and Country League |
| After Election: | Thomas Playford |
| After Party: | Liberal and Country League |
State elections were held in South Australia on 4 March 1950. All 39 seats in the South Australian House of Assembly were up for election. The incumbent Liberal and Country League led by Premier of South Australia Thomas Playford IV defeated the Australian Labor Party led by Leader of the Opposition Mick O'Halloran.[1] [2] [3] [4]
Only one seat changed hands, rural Stanley saw the Labor member re-elected as an independent member.[5] [6] Notably, neither major party contested the independent-held seat of Ridley.[1] [2]
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| COLSPAN=4 align="center" | LCL seats (23) | ||
| COLSPAN=4 align="center" bgcolor="Teal" | Marginal | ||
| Victoria | Roy McLachlan | LCL | 2.7% |
| Norwood | Roy Moir | LCL | 4.5% |
| Torrens | Shirley Jeffries | LCL | 4.5% |
| Prospect | Elder Whittle | LCL | 5.8% |
| COLSPAN=4 align="center" bgcolor="Teal" | Fairly safe | ||
| Stirling | Herbert Dunn | LCL | 6.6% v IND |
| Unley | Colin Dunnage | LCL | 7.8% |
| COLSPAN=4 align="center" bgcolor="Teal" | Safe | ||
| Onkaparinga | Howard Shannon | LCL | 11.1% |
| Burra | George Hawker | LCL | 11.3% |
| Glenelg | Baden Pattinson | LCL | 12.3% |
| Mitcham | Henry Dunks | LCL | 18.5% |
| Gouger | Rufus Goldney | LCL | 20.5% |
| Newcastle | George Jenkins | LCL | 21.3% |
| Angas | Berthold Teusner | LCL | 25.9% v IND |
| Albert | Malcolm McIntosh | LCL | unopposed |
| Alexandra | David Brookman | LCL | unopposed |
| Burnside | Geoffrey Clarke | LCL | unopposed |
| Eyre | Arthur Christian | LCL | unopposed |
| Flinders | Rex Pearson | LCL | unopposed |
| Gumeracha | Thomas Playford | LCL | unopposed |
| Light | Herbert Michael | LCL | unopposed |
| Rocky River | James Heaslip | LCL | unopposed |
| Yorke Peninsula | Cecil Hincks | LCL | unopposed |
| Young | Robert Nicholls | LCL | unopposed |
| COLSPAN=4 align="center" | Labor seats (12) | ||
| COLSPAN=4 align="center" bgcolor="red" | Marginal | ||
| Murray | Richard McKenzie | ALP | 0.8% |
| Gawler | Leslie Duncan | ALP | 4.2% |
| Goodwood | Frank Walsh | ALP | 4.5% |
| COLSPAN=4 align="center" bgcolor="red" | Fairly safe | ||
| Adelaide | Sam Lawn | ALP | 6.5% v IND |
| Wallaroo | Hughie McAlees | ALP | 8.1% |
| COLSPAN=4 align="center" bgcolor="red" | Safe | ||
| Semaphore | Harold Tapping | ALP | 30.5% v IND |
| Port Adelaide | James Stephens | ALP | 40.2% v COM |
| Stuart | Lindsay Riches | ALP | 42.8% v COM |
| Port Pirie | Charles Davis | ALP | undistributed |
| Frome | Mick O'Halloran | ALP | unopposed |
| Hindmarsh | Cyril Hutchens | ALP | unopposed |
| Thebarton | Fred Walsh | ALP | unopposed |
| COLSPAN=4 align="center" | Crossbench seats (4) | ||
| Stanley | Percy Quirke | IND | 10.0% v LCL |
| Chaffey | William MacGillivray | IND | 10.7% v LCL |
| Mount Gambier | John Fletcher | IND | 14.4% v ALP |
| Ridley | Tom Stott | IND | unopposed |