Dialysis may refer to:

Dialysis (chemistry), a process of separating molecules in solution Electrodialysis, used to transport salt ions from one solution to another through an ion-exchange membrane under the influence of an applied electric potential. Kidney dialysis is the process of removing water, solutes and toxins from the blood of individuals with compromised kidney function, primary types of which are: Hemodialysis Peritoneal dialysis Hemofiltration Liver dialysis, a detoxification treatment for liver failure. Dialysis (fly), a genus of insects in the family Xylophagidae