No-tillage is recognized as a best management practice for reducing erosion from crop production fields. Approximately 54% of Virginia cropland was managed no-till in 2004. Soils managed under long-term no-till typically have increased soil organic mater (SOM) contents. Quantification of soil organic matter increases with long-term no-tillage is lacking for the Mid Atlantic Coastal Plain. The primary objective of this study was to quantify differences in SOM between soils under long-term (10 years) no-tillage vs. conventional tillage management. Thirty sites where selected such that pair wise comparisons could be made between soil series with all factors other than tillage held constant (e.g., crop rotation, amendment history). Five surface samples where collected from 0 - 2.5 cm, 2.5 - 7.5 cm and 7.5 to 15 cm and analyzed for total C and N. Soil organic mater was calculated on a volumetric and gravimetric basis. Increased SOM in no-tillage soils has significant implications for crop management, especially N fertilizer recommendations. Elevated SOM is likely to significantly influence N cycling and potentially result in reduced N fertilizer applications for certain crops where N uptake patterns match N mineralization.