Australia's aviation regulator is often called the Dept of Many Names.
Over the years, but not in order, it was
CAA = Cease all aviation
DCA = Dept of Constant Agrivation
DoT = Detriment of Transport
DoTaC = Detriment of Transport and Communications
It also had a couple of other names that I cant remember
One name that only lasted a couple of weeks (just long enough for the politicians mates to deliver the new letterheads and change all the building signs) was DOA which naturally was called Dead on Arrival.
It is currently called CASA and I will not spell that one out as I do not want to be banned
Here is one of the cartoons about them during their brief life as DoA in 1986