Dunny is Australian/New Zealand slang for a toilet.
Dunny may also mean:
Dunny Goode (1929–2004), head football coach for Eastern New Mexico University "Dunny", nickname for Fred Dunlap (1859–1902), 19th century baseball player and manager "Dunnies", nickname for the Whitby Dunlops, a Canadian Major League Hockey team "Dunny", a toy produced by the company Kidrobot, similar to the Munny Dunny (Bluey), episode of the Australian children's TV show Bluey
See also Dunnie, a character in Anglo-Scottish folklore D'ni from the Myst franchise Duny, childhood name of the character Ged (Earthsea)