The number of studies focusing on atmospheric Organic Nitrogen (ON) deposition (wet and dry) has increased steadily in recent years, but comparatively little has been done to draw together this disparate knowledge. The global view confirms the quantitative importance of ON in atmosphere. These studies have a cumulative data also helps to clarify some of the uncertainly that arises from the generally locally and temporally limited scale of the individual studies. Because of analytical and procedural changes in recent decades assessments are made of the comparability of the data set caution is needed in comparisons of individual studies but the overall trends in the compiled set are more robust. With regard to the sources, it is likely that some of the organic material observed is not locally generated but undergoes extensive or long-range atmospheric transport.