A new library of modular amino phosphite ligands obtained in a few synthetic steps from enantiopure amino alcohols has been tested in asymmetric Pd‐catalyzed allylicsubstitution. The modular ligand design is crucial to find highly selective catalysts for each substrate type using a wide range of C‐, N‐, and O‐nucleophiles. A DFT study of the species responsible for the enantiocontrol was used to optimize