Bludger is a derogatory Australian slang term for a lazy individual, particularly one who is perceived to receive undeserved welfare or material benefits. "Dole bludger" is a related term in common usage, specifically used to refer to a longterm unemployed person who draws the dole, or state unemployment benefit.

The verb form of the term "to bludge", refers to any activity requiring little effort but delivering a disproportionately high level of remuneration or other desirable material outcome.

Additional uses of the word bludge include "netbludge", a term that describes the act of surfing the net when one should be working.

In archaic use a bludger is a mugger who uses a bludgeoning weapon against their victims. To bludge is to mug someone, or to strike them, using such a weapon.

A Bludger is a ball in the fictional game Quidditch from the Harry Potter series.