In physics, waves do not have a "mass" in the traditional sense. Mass is a property associated with particles, such as atoms or subatomic particles, and it quantifies the amount of matter contained in an object.
Waves, on the other hand, are disturbances that propagate through a medium or through space. They can be characterized by various properties, such as frequency, wavelength, and amplitude, but not mass. Examples of waves include electromagnetic waves (such as light or radio waves) and mechanical waves (such as sound waves or water waves).
However, it's worth noting that particles can exhibit wave-like behavior, as described by quantum mechanics. This is known as wave-particle duality, where particles can exhibit both particle-like and wave-like properties. In this context, particles can be associated with a property called "wavefunction," but the wavefunction does not represent the mass of the particle. Instead, it describes the probability distribution of finding the particle in different states.