Contemporary debate over major clean air issues has kept the control of nitrogen oxides (NOJ in the forefront of public interest. While amendments to the Clean Air Act, new rules, programs, and policies emerge in response to concern for acid deposition, ozone non-attainment, global warming, and public health and welfare, it is anticipated that NO, control technology wiU be applied to a greater degree. However, existing regulations, policy and market forces are already forcing technological aduances. This article presents a sumnary of the current regulatory situation and looks ahead at the Clean Air act reauthorization.The article also presents an o v e h of stationary source control for NO, emissions.