Conservative No overall control Elections to Colchester Borough Council were held on 8 May 1986 alongside other local elections across the United Kingdom.

At the election, the Conservative Party lost control of the council to no overall control after having held an overall majority since the 1976 election.

Vote share changes are compared to the top candidate result from the 1984 election.

Vote share changes are compared to the top candidate result from the 1984 election.

No Independent candidate as previous (-25.5).