The Plaza Vieja is a plaza located in Old Havana, Cuba. The plaza and its surroundings are also one of the seven consejos populares (wards) of the municipality of Old Havana. It has a residential population of 17,426.

Old Havana is the city-center (downtown) and one of the 15 municipalities forming Havana, Cuba. It has the second highest population density in the city and contains the core of the original city of Havana. The positions of the original Havana city walls are the modern boundaries of Old Havana.