The elastic constants of zinc are compiled and reviewed; one hundred references are cited. The included elastic constants are: Young’s modulus, shear modulus, bulk modulus, compressibility, Poisson’s ratio, second‐order single‐crystal elastic stiffness and compliances, and third‐order, elastic stiffness. Temperature and elastic‐anisotropy effects are also reviewed. Other topics are: sound velocities, elastic Debye temperature, Cauchy relationships, elastic stability, pressure effects, and theoretical studies. New polycrystalline data are computed from single‐crystal data by tensor‐averaging methods.