O'Grady's Falls is a waterfall on the Hobart Rivulet, situated at around 450 metres above sea level on the lower slopes of Mount Wellington, accessible from the suburb of Fern Tree.

Standing at over ten metres in height, the falls were well known to early mountain climbers and likely to the palawa long before European settlement. They were first recorded by name in 1888 and became a popular destination after a track was opened in 1931.

The cold, clear water cascades into the Hobart Rivulet, which flows under the city and eventually into the Derwent River. Lush ferns and mosses frame the falls, best viewed from the middle of the bridge spanning the rivulet.

The surrounding Wellington Park forest offers wildflowers in summer, abundant birdlife, and views toward the Organ Pipes. The lower elevation and sunny aspect make the site a viable destination year-round, including winter.