Propagation can refer to:

• Chain propagation in a chemical reaction mechanism

• Crack propagation, the growth of a crack during the fracture of materials

• Propaganda, non-objective information used to further an agenda

Reproduction, and other forms of multiplication or increase

• Plant propagation, the production of more plants

• Propagation of schema, in artificial reproduction

• Software propagation, the distribution of free software

Wave propagation, the motion of a wave

• Radio propagation, the application of wave propagation to radio communications

• In music

• Propagation (album)

• "Propagation", a song by Lower Dens from the album Nootropics

• "Propagation", a song by Com Truise from the album Iteration