What country is the city of Ankh Morpork located in?
Ankh Morpork is a city state and therefore regarded as a country in its own right.
According to the Discworld Mapp, published by Terry Pratchett and Stephen Briggs and subtitled "Being the Onlie True & Mostlie Accurate Mappe of the Fantastyk & Magical Dyscworlde", the city is bordered on the hubward side by Quirm and Sto Lat, with the Sto Plains beyond.
Ankh Morpork lies on the coast, so to the rimward is the Circle Sea. Djelibeybi lies just across the sea.
In The Fifth Elephant, the 24th Discworld book, Ankh Morpork sends Sam Vimes to be the new Ambassador to Uberwald. Only a sovereign state can send or receive ambassadors - even in Discworld. So, it is not located within any other country.
It's not much of a city, but Morepork Creek is located in Australia.
It's only about 15 miles from the town, if not quite a city, of Porcupine.
As both are in the Australian outback, 15 miles is a mere stroll by local standards, so Morepork Creek can, arguably, be regarded as a suburb of Porcupine.
If you don't look too hard you may decide that Morpork and Morepork are alike-enough to qualify as valid-enough for a question of this sort. Hopefully, Terry would have agreed :-).