| Election Name: | 1901 North East Lanarkshire |
| Type: | presidential |
| Country: | United Kingdom |
| Previous Election: | North East Lanarkshire (UK Parliament constituency)#Elections in the 1900s |
| Previous Year: | 1900 |
| Next Election: | 1904 North East Lanarkshire by-election |
| Next Year: | 1904 |
| Election Date: | 26 September 1901 |
| Candidate1: | Rattigan |
| Party1: | Liberal Unionist |
| Popular Vote1: | 5,673 |
| Percentage1: | 42.6% |
| Candidate2: | Harmsworth |
| Party2: | Liberal Party (UK) |
| Popular Vote2: | 4,769 |
| Percentage2: | 35.7% |
| Candidate3: | Smillie |
| Party3: | Scottish Workers' Representation Committee |
| Popular Vote3: | 2,900 |
| Percentage3: | 21.7% |
| Map Size: | 250px |
| MP | |
| Posttitle: | Subsequent MP |
| Before Election: | John Colville |
| Before Party: | Liberal Party (UK) |
| After Election: | Alexander Findlay |
| After Party: | Liberal Party (UK) |
The North East Lanarkshire by-election was a Parliamentary by-election held on 26 September 1901.[1] The constituency returned one Member of Parliament (MP) to the House of Commons of the United Kingdom, elected by the first past the post voting system.
Liberal Unionist party candidate Sir William Henry Rattigan won the seat from the Liberal Party who had held the seat at the general election the year before.