| Election Name: | 1874 County Dublin by-election |
| Type: | presidential |
| Country: | United Kingdom |
| Seats For Election: | Rochester and Strood constituency |
| Ongoing: | no |
| Previous Election: | 1874 United Kingdom general election |
| Previous Year: | 1874 |
| Next Election: | 1880 United Kingdom general election |
| Next Year: | 1880 |
| Election Date: | 18 March 1874 |
| Candidate1: | Thomas Edward Taylor |
| Image1: | Taylor dublin UniMag1875.JPG |
| Image1 Size: | 105px |
| Party1: | Irish Conservative Party |
| Popular Vote1: | 2,183 |
| Percentage1: | 63.9% |
| Candidate2: | Charles Stewart Parnell |
| Image2 Size: | 100px |
| Party2: | Home Rule League |
| Popular Vote2: | 1,235 |
| Percentage2: | 36.1% |
| Map Size: | 150px |
| MP | |
| Posttitle: | Subsequent MP |
| Before Election: | Thomas Edward Taylor |
| Before Party: | Irish Conservative Party |
| After Election: | Thomas Edward Taylor |
| After Party: | Irish Conservative Party |
A by-election was held on 18 March 1874 in County Dublin due to the incumbent Conservative MP, Thomas Edward Taylor, becoming Chancellor of the Duchy of Lancaster, requiring a ministerial by-election. It was retained by the incumbent.