Malpighian corpuscle, the funnel-like structure constituting the beginning of the structural unit of the kidney (nephron) and comprising the Malpighian capsule and its partially enclosed glomerulus.

Malpighian corpuscles average about 0.2 mm in diameter, with each capsule composed of two parts: a central glomerulus and a glomerular capsule. The corpuscles are part of a filtering system through which nonprotein components of blood plasma enter the tubules for urinary excretion.