Cement shoes is a slang term adopted by the American Mafia crime world for a method of execution that involves weighting down a victim and throwing him or her into the water to drown. It has become adopted in the US as a humorous term representating any exotic threat from criminals.

Cement shoes traditionally involves a victim placing each foot into the two spaces of a cinderblock, which is then filled with wet cement. When the cement hardens, the victim is thrown into a river, lake or even the ocean.

Although gruesome images of the victim's helplessness when encased in cement shoes lend substance to this threat, it is unclear how often such a cumbersome and time-consuming method of execution was actually used, outside of Hollywood movies.