In summary, we have developed a visible-light and silanemediated mediated carbonyl alkylative amination method for the synthesis of secondary alkylamines from readily available primary alkylamines, aldehydes and alkyl iodides. This multicomponent protocol exhibits a good scope and tolerates a wide range of functional groups on all the three components. Further synthetic utility of the new method is demonstrated through a one-pot synthesis of saturated nitrogen-containing heterocycles, the synthesis of which would require multi-step routes using established methods. The new carbonyl alkylative amination is also chemoselective in the reaction of primary amines over cyclic secondary amines and provides a rare example of selective Nalkylation of diamines, which remains an important challenge in chemical synthesis. Overall, the operationally straightforward CAA reaction provides a strategically distinct transformation for alkylamine synthesis that is complementary to-and in many cases, provides products that would be inaccessible viacarbonyl reductive amination. We believe this transformation will be of interest to practitioners of biologically-relevant molecule synthesis in academic and industrial settings.