Allies means friends or helpers, The enemy of the US had "allies" too. So, yes.
Britain, Canada and every member of the NATO Alliance.
ALLIED
It was a member of the Allies.
Latvia is a member of Nato.
its a Nato member
Romania is NATO member.
I wouldn't think Cyprus are allies with the US considering the US are allies with Turkey and Turkey with the blessing of the US invaded Cyprus.
The US main allies are: U.K., Israel, And Australia.
Britain is a member of NATO.
The Netherlands is a founding member of NATO.
China was with the allies as it had been invaded by Japan.
The UK is a member of NATO so its allies are all the other NATO members.