Where is Wakanda located, according to the Marvel Cinematic Universe?
The Marvel Atlas places it in West Africa, but having watched Black Panther it seemed to be much further southeast
The issue is that the first time we see a reference to the location of Wakanda is in Captain America: Civil War.
It is located on the Northeastern edge of Uganda.
But the more recently released Marvel's Black Panther: The Art of the Movie alters this. The location is now on the Southwestern edge of Uganda.
According to the map from Civil War, it is closer to Uganda (image taken from the Wikia).
According to the MCU, Wakanda is located in the Eastern part of Africa (somewhere in the region between Kenya and Tanzania in the real world). Here is a video of Iron Man 2's ending where Nick Fury approaches Stark with the Avengers initiative.
Pause the video at 1:17. There is a marker in Africa which is Wakanda.
If you look at the map in the opening scene of Black Panther, Wakanda seems to be taking the place of south-western Uganda on a real map. So it's bordered by Uganda, Rwanda and Congo... and probably a bit of Tanzania.