| Election Name: | 1893 Wanganui by-election |
| Country: | New Zealand |
| Flag Year: | 1893 |
| Type: | presidential |
| Ongoing: | no |
| Previous Election: | 1890 New Zealand general election |
| Previous Year: | 1890 general |
| Next Election: | 1893 New Zealand general election |
| Next Year: | 1893 general |
| Candidate1: | Archibald Willis |
| Party1: | New Zealand Liberal Party |
| Popular Vote1: | 1,031 |
| Percentage1: | 62.37 |
| Candidate2: | Gilbert Carson |
| Party2: | Conservative (New Zealand) |
| Popular Vote2: | 622 |
| Percentage2: | 37.62 |
| Member | |
| Before Election: | John Ballance |
| After Election: | Archibald Willis |
| Before Party: | New Zealand Liberal Party |
| After Party: | New Zealand Liberal Party |
The 1893 Wanganui by-election was a by-election held on 9 June 1893 during the 11th New Zealand Parliament in the central North Island electorate of Wanganui.[1]
The election was held due to the death of sitting Member, Prime Minister John Ballance. The contest for his former seat was won by his longtime friend and business partner Archibald Willis, who received support from the constituents by keeping the "Ballance tradition" alive.
The following table gives the election results: