This is a database of single-crystal adiabatic elastic moduli for minerals and related materials with cubic symmetry. The database consists primarily of experimental measurements and includes over 200 compositions. Primary data recorded are the composition of each material, its crystal structure, density, and the three independent nonzero adiabatic elastic moduli (C11, C12, and C44). From these, a variety of additional elastic and acoustic properties are calculated and compiled, including polycrystalline aggregate elastic properties, sound velocities, and anisotropy factors.