The 1890 Stamford by-election was held on 7 March 1890, when the incumbent Tory MP Albemarle Bertie became ineligible after acceding to the Earldom of Lindsey. The by-election was won by the Tory candidate Charles Chaplin. 
Result.
! scope="col" colspan="2" style="width: 130px"|Party
! scope="col" style="width: 17em"|Candidate
! scope="col" style="width: 5em"|Votes
! scope="col" style="width: 3.5em"|%
! scope="col" style="width: 3.5em"| ;templatestyles src="Template:Tooltip/styles.css" / ;±%
! colspan="3" style="text-align: right; margin-right: 0.5em" | Majority
! colspan="3" style="text-align: right; margin-right: 0.5em" scope=row | Turnout