| Election Name: | 1908 Adelaide by-election |
| Percentage1: | 51.17% |
| After Party: | Labour |
| After Election: | Ernest Roberts |
| Before Party: | Protectionist Party |
| Before Election: | Charles Kingston |
| MP | |
| Swing2: | 48.83 |
| Percentage2: | 48.83% |
| Popular Vote2: | 4,887 |
| Party2: | Independent (politician) |
| Candidate2: | Alexander McLachlan |
| Swing1: | 51.17 |
| Popular Vote1: | 5,121 |
| Country: | Australia |
| Party1: | Labour |
| Candidate1: | Ernest Roberts |
| Seats For Election: | The Adelaide seat in the House of Representatives |
| Registered: | 29,874 |
| Turnout: | 10,068 (33.70%) |
| Next Year: | 1910 |
| Next Election: | 1910 Australian federal election |
| Election Date: | 13 June 1908 |
| Previous Year: | 1906 |
| Previous Election: | 1906 Australian federal election |
| Ongoing: | no |
| Type: | Parliamentary |
| Colour1: | DE3533 |
A by-election was held for the Australian House of Representatives seat of Adelaide on 13 June 1908. This was triggered by the death of former Premier of South Australia and federal Protectionist Party MP Charles Kingston.
The by-election was won by Labor candidate Ernest Roberts, after the seat was previously won uncontested by Kingston at the 1903 and 1906 elections. Voting was not compulsory in 1908.
Alexander McLachlan was an independent Anti-Socialist Party candidate.