Macroregiunea patru (Macroregion 4)

RO4 is a NUTS 1 macroregion in Romania, the fourth of the country's four major statistical regions. It encompasses the NUTS 2 regions of București-Ilfov, Nord-Est, Sud-Est, and Sud-Muntenia, covering the capital and surrounding areas in the south and east. The classification is used for EU cohesion policy and regional statistical analysis.