Which IATA code represents Rio de Janeiro, Brazil?

The IATA code that represents Rio de Janeiro, Brazil, is indeed GIG. This code is specifically assigned to the main international airport serving Rio de Janeiro, which is Galeão International Airport. IATA codes are three-letter designations used to identify airports around the world, and each code is unique to its respective airport. In the case of Rio de Janeiro, GIG is recognized as the official code, making it the correct answer for this question.

The other codes listed relate to different airports: CDG is for Charles de Gaulle Airport in Paris, PVR does not correspond to a recognized major airport, and LHR is the IATA code for Heathrow Airport in London. Understanding these codes helps in identifying airports and enhancing navigation for travel planning.