This document is the annual EU emission inventory report under the United Nations Economic Commission for Europe (UNECE) Convention on Long-range Transboundary Air Pollution (Air Convention) (UNECE, 1979). The Air Convention obliges and invites Parties to report emission data for numerous air pollutants: main pollutants: nitrogen oxides (NOX), non-methane volatile organic compounds (NMVOCs), sulphur oxides (SOX), ammonia (NH3) and carbon monoxide (CO); particulate matter (PM) emitted directly to the air (primary PM): PM with a diameter of 2.5 µm or less (PM2.5; also called fine PM); PM with a diameter of 10 µm or less (PM10); total suspended particulates (TSPs); black carbon (BC), the most strongly light-absorbing component of PM (additional) priority heavy metals (HMs): lead (Pb), cadmium (Cd) and mercury (Hg); additional HMs: arsenic (As), chromium (Cr), copper (Cu), nickel (Ni), selenium (Se) and zinc (Zn); persistent organic pollutants (POPs): polychlorinated dibenzodioxins/dibenzofurans (PCDD/Fs), polycyclic aromatic hydrocarbons (PAHs), hexachlorobenzene (HCB) and polychlorinated biphenyls (PCBs); additional reporting of the individual PAHs, benzo(a)pyrene (B(a)P), benzo(b)fluoranthene (B(b)F), benzo(k)fluoranthene (B(k)F) and indeno (1,2,3-cd)pyrene (IP), and the sum of all four.