Listenbourg is a fictional country created as the subject of an internet meme in October 2022, which depicts it as an extension of the Iberian Peninsula. French Twitter user Gaspard Hoelscher shared a doctored map of Europe with a red arrow pointing to the outline of a pasted country adjacent to Portugal and Spain, and joked that Americans would not be able to name the country.
The nonexistent nation went viral on social networks, with users expanding on the fictional history of the country and some major brands, national politicians, and official organisations playing along with the joke.