Coventry City Council is now under the control of the Conservative party for the first time in three decades.
The party took two seats and the Socialists took one. Labour, independents and the Liberal Democrats all lost one seat each.
The Tories also made gains on two Warwickshire councils - it is now one seat short of controlling Rugby and it made ground in Nuneaton and Bedworth.
The party held on to Stratford-on-Avon where there were no changes.
The new Coventry council has 29 Conservative members, 19 Labour, three Socialists, two Lib Dems and one independent.
Nuneaton and Bedworth Borough Council has been Labour-controlled since it was set up in 1973.
But the party's majority has been cut back to two after it lost four seats. There are now 18 Labour members, 15 Tories and one Lib Dem.
In Rugby, the Conservative party has also gained ground and now has exactly half the seats, but not quite overall control, after taking three seats.
The party took one seat from Labour and two from independents. The make-up now stands at 24 Tories, 13 Labour, 10 Lib Dems and one independent.
There were no changes in Stratford-on-Avon where the council is made up of 30 Conservatives, 20 Lib Dems and three independents.
There are no elections this year for seats on Warwickshire County Council, Warwick District Council and North Warwickshire Borough Council.