The relationship between atmospheric calcium ion (Ca²⁺) wet deposition and the sequestration of carbon in soils as pedogenic carbonates has not received adequate attention in the scientific literature. This preliminary study quantified average annual atmospheric Ca²⁺ wet deposition from 1994 to 2003 within the continental United States (U.S.) and ranked the twelve major soil orders in terms of Ca²⁺ wet deposition. The average annual atmospheric Ca²⁺ wet deposition for each soil order was estimated using geographic information systems (GIS) and data layers derived from atmospheric Ca²⁺ wet deposition and a national soils database. The resulting map of average annual atmospheric Ca²⁺ wet deposition over this ten-year period reveals that the highest deposition (2.5 to 3.6 kg ha^-1) occurred in the Central Midwest-Great Plains region of the U.S., which was likely due to dust storms of loess derived soils. The soil orders receiving the highest average annual atmospheric Ca²⁺ wet deposition from 1994 to 2003 were: 1) Mollisols (3.1 × 10⁸ kg), 2) Alfisols (2.2 × 10⁸ kg), 3) Entisols (1.0 × 10⁸ kg), and 4) Aridisols (7.8 × 10⁷ kg). In terms of potential soil carbon sequestration, these deposited Ca²⁺ values would be equivalent to formation of the following theoretical amounts of calcite or sequestered carbon: 1) Mollisols (7.7 × 10⁸ kg CaCO₃; 9.2 × 10⁷ kg C), 2) Alfisols (5.6 × 10⁸ kg CaCO₃; 6.7 × 10⁷ kg C), 3) Entisols (2.5 × 10⁸ kg CaCO₃; 3.0 × 10⁷ kg C), and 4) Aridisols (2.0 × 10⁸ kg CaCO₃; 2.4 × 10⁷ kg C). Studies such as this one can be useful for examining carbon cycling and accounting on a global scale by estimating the potential for soil carbonate formation from atmospheric wet deposition data.