The 1900 Isle of Wight by-election was held on 23 May 1900 after the resignation of the incumbent Conservative Sir Richard Webster to become Master of the Rolls which meant accepting a peerage. The seat was retained by the Conservative candidate John Seely. The Liberal candidate, Godfrey Baring was the chairman of the Isle of Wight County Council and would become the Liberal MP in 1906.
! 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
! style="text-align:right;" | Swing
References.
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