The north and north-west of Sydney has many waterfalls and cascades. While some have been affected by development, many of them are protected by national parks and bushland reserves. This list of waterfalls in Sydney’s north listed include those in Garigal National Park, Ku-ring-gai Chase and Lane Cove National Park.
See also waterfalls in Sydney’s south / Blue Mountains / Central Coast.
A very picturesque waterfall after heavy rain, Allenby Falls (or the Allenby Park Waterfal) cascades over multiple tiers. It can be reached via a few short bushwalking trails in Allenby Park, in Sydney's northern beaches.
Babbage Falls is a small waterfall along Moores Creek on the Little Digger Track. For the best view, follow the secret track that takes you to a long overhang below the falls.
A picturesque cascade in Hunts Creek Reserve, Balaka Falls can be visited by a few short access tracks, or form part of a longer (3.5km) dog-friendly bushwalk through the reserve,
Blaxlands Falls or Buckham Falls is a waterfall along Shrimptons Creek. Above the waterfall is a series of small cascades.
The Caleyi Falls (they don't have an unofficial name) is a small but picturesque waterfall along an informal mountain-biking trail in Garigal National Park.
A small but wide cascade where Carroll Creek drops over a long ledge, just before reaching Middle Harbour Creek.
The Carroll Creek Falls is a small but picturesque waterfall and swimming hole along Carroll Creek, in Garigal National Park.
At the head of Collins Flat Beach is Collins Beach Waterfall. The waterfall is best visited after decent rain.
Crystal Creek Falls is a tiered waterfall located just next to McCarrs Creek Road, but hidden from views by trees.
Darling Mills Cascades in the Bidjigal Reserve lays the claim to fame of being the only waterfall in the Hills Shire. The Darling Mills Creek tumbles over some rock ledges.
A tiered waterfall along a tributary of Deep Creek, close to Deep Creek Reserve. It's best visited after some decent rain.
The Deep Creek Upper Falls is a small waterfall in a very natural setting along Deep Creek There are some smaller cascades nearby,
Dundundra Falls is a small waterfall along Kierans Creek, in the Dundundra Falls Reserve. There are smaller cascades below and above the waterfall.
The Elvina Waterfall tumbles 25m down a sheer cliff. At the base of the falls is a sandy area surrounded by lush vegetation.
Frasers Brook Cascades is a very small waterfall along the Cliff Connection Track, where the creek drops into a natural pool.