| Election Name: | 1927 South Australian state election |
| Country: | South Australia |
| Type: | parliamentary |
| Ongoing: | no |
| Previous Election: | 1924 South Australian state election |
| Previous Year: | 1924 |
| Next Election: | 1930 South Australian state election |
| Next Year: | 1930 |
| Seats For Election: | All 46 seats in the South Australian House of Assembly 24 seats were needed for a majority |
| Leader1: | Richard L. Butler |
| Leader Since1: | 17 December 1925 |
| Party1: | Liberal Federation |
| Leaders Seat1: | Wooroora |
| Percentage1: | 40.02% |
| Swing1: | 1.68% |
| Last Election1: | 17 seats |
| Seats1: | 23 seats |
| Seat Change1: | 6 |
| Leader2: | Lionel Hill |
| Leader Since2: | 28 August 1926 |
| Party2: | Australian Labor Party (South Australian Branch) |
| Leaders Seat2: | Port Pirie |
| Percentage2: | 47.99% |
| Swing2: | 0.37 |
| Last Election2: | 27 seats |
| Seats2: | 16 seats |
| Seat Change2: | 11 |
| Leader3: | Archie Cameron |
| Leader Since3: | 26 March 1927 |
| Party3: | Country Party (South Australia) |
| Leaders Seat3: | Wooroora |
| Percentage3: | 5.44% |
| Swing3: | 3.56 |
| Last Election3: | 2 seats |
| Seats3: | 5 seats |
| Seat Change3: | 3 |
| Premier | |
| Before Election: | Lionel Hill |
| Before Party: | Australian Labor Party (South Australian Branch) |
| After Election: | Richard L. Butler |
| After Party: | Liberal Federation |
State elections were held in South Australia on 26 March 1927. All 46 seats in the South Australian House of Assembly were up for election. The incumbent Australian Labor Party government led by Premier of South Australia Lionel Hill was defeated by the opposition Liberal Federation led by Leader of the Opposition Richard L. Butler, and the Country Party (SA) led by Archie Cameron. Each district elected multiple members, with voters casting multiple votes.
Before the election, the Liberal Federation attempted to enter in to a formal coalition with the Country Party, but when this was rejected, CountryParty candidates were given no Liberal opposition in six seats in five rural electorates.[1]
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