Arwid Hall and James Allanson will join the two boards respectively
Douglas Council and Jurby Commissioners will not be holding by-elections as only one person in each area has come forward.
In the capital, where a single seat was vacant, Arwid Hall will become the new representative in Central Ward, joining Mark Wheeler and Natalie Byron-Teare.
Meanwhile, James Allanson has joined the board in Jurby, but one seat there still remains unfilled.
He joins Darren Hope, Yasmin Cowell and Phillip Corkill who were elected in April.
Closure of northern section of Mountain Road extended
Lieutenant Governor taking part in charity bungee jump
DoI 'willing to assist' in talks over Solway Harvester memorial maintenance
Third party damage leaves 'large area' of Peel without water supply