Diuresis may refer to:
- Urine production, as an aspect of fluid balance
- Excessive urine production - see polyuria
- Forced diuresis, increased urine formation by diuretics and fluid
- Immersion diuresis, a type of diuresis caused by immersion of the body in water
- Osmotic diuresis, increased urination caused by the presence of substances in the kidneys
- Rebound diuresis, sudden resurgence of urine flow that occurs during convalescence from acute renal failure