Muramoyltetrapeptide carboxypeptidase (, carboxypeptidase IIW, carboxypeptidase II, lysyl-D-alanine carboxypeptidase, L-lysyl-D-alanine carboxypeptidase, LD-carboxypeptidase) is an enzyme. This enzyme catalyses the following chemical reaction
Variants are known from various microorganisms.