The 10 Most Venomous Snakes in Australia, Ranked

Australia is the only continent where most of the world's deadliest land snakes live in the wild. This ranking lists the 10 most venomous snakes in Australia with their scientific name, venom type, and verified behavioral facts, so you can understand why this wildlife has made Australia famous around the world.

Quick facts: the most venomous snakes in Australia

• Australia is home to 7 of the world's 10 most venomous land snakes, topped by the inland taipan.
• The inland taipan (Oxyuranus microlepidotus) has the most toxic venom of any land snake on the planet: a single bite reportedly contains enough venom to kill around 100 adults, according to figures cited by zoos and medical sources.
• The eastern brown snake (Pseudonaja textilis) causes more snakebite deaths in Australia than any other species, even though it doesn't have the most potent venom, simply because it lives so close to farms, suburbs, and cities.

Summary table: the 10 most venomous snakes in Australia

Rank	Common name	Scientific name	Key fact
10	Small-eyed snake	Cryptophis nigrescens	Its venom is a myotoxin that destroys muscle tissue instead of attacking the nervous system
9	Red-bellied black snake	Pseudechis porphyriacus	A strong swimmer; no confirmed human death has ever been attributed to this species
8	Lowland copperhead	Austrelaps superbus	Stays active even on cold winter mornings, when most other Australian snakes shut down
7	Mulga snake (king brown)	Pseudechis australis	Delivers more venom per bite than any other snake in the world
6	Northern brown snake	Pseudonaja nuchalis	No species-specific antivenom exists; doctors use the general brown snake antivenom instead
5	Common death adder	Acanthophis antarcticus	Has the longest fangs of any Australian snake and one of the fastest recorded strikes
4	Mainland tiger snake	Notechis scutatus	An excellent swimmer, responsible for a large share of serious bites in southern Australia
3	Coastal taipan	Oxyuranus scutellatus	The third most toxic venom in the world and the record holder for venom yield in a single milking
2	Eastern brown snake	Pseudonaja textilis	The second most toxic venom in the world and the species responsible for the most deaths in Australia
1	Inland taipan	Oxyuranus microlepidotus	The most toxic venom of any land snake on Earth, despite being a shy, reclusive species

Full ranking of the most venomous snakes in Australia

Below is a detailed look at every snake in this ranking of the most venomous snakes in Australia, from number 10 all the way up to the most venomous snake in the world.

10. Small-eyed snake (Cryptophis nigrescens)

The small-eyed snake is one of the least well-known of Australia's venomous snakes among the general public, yet its venom has an unusual medical trait: instead of attacking the nervous system, it contains a myotoxin that progressively breaks down muscle fibers. This process can take several days to cause pain or visible symptoms, which delays diagnosis. Since no antivenom has been developed specifically for this species, Australian doctors rely on tiger snake antivenom, since the two venoms share a similar chemical structure that allows it to neutralize the damage. This snake is a specialized hunter of skinks (a type of small lizard), which it hunts mostly at dusk while largely ignoring other prey; it reportedly finds frogs so unappealing that it will spit one out if it accidentally ends up in its mouth. Several individuals are often found sheltering together under the same rock or log, and wildfires hit their populations especially hard, since the loss of leaf litter leaves them exposed to birds of prey.

9. Red-bellied black snake (Pseudechis porphyriacus)

The red-bellied black snake is one of the most recognizable of Australia's venomous snakes, thanks to its glossy black back and vivid red or pink belly. It's a strong swimmer that tends to live near swamps, rivers, and billabongs (oxbow lakes left behind by old river channels), where it can stay submerged for several minutes while hunting frogs and fish. Despite being one of the species responsible for the most bites within its range, no death has ever been confirmed as caused by this snake, thanks in large part to an effective antivenom. One especially notable fact: after the toxic cane toad was introduced to Australia, red-bellied black snakes underwent rapid evolutionary change in just a handful of generations, with smaller-headed individuals physically unable to swallow the largest, most toxic toads gaining a survival advantage and passing that trait on.

8. Lowland copperhead (Austrelaps superbus)

The lowland copperhead stands out among Australia's venomous snakes for its unusual tolerance of cold weather. While most Australian snakes become sluggish and inactive in winter, this species keeps hunting and basking on cold mornings, and some populations are even found in mountain areas close to the snowline. It's an extremely patient ambush predator that can stay perfectly still for long stretches while waiting for prey to come within range. During the mating season, rival males take part in a ritualized wrestling match, coiling the lower halves of their bodies together while keeping their heads raised and apart a contest of strength, not a fight to bite.

7. Mulga snake, or king brown (Pseudechis australis)

The mulga snake, also known as the king brown snake, delivers more venom per bite than any other venomous snake in the world, far outpacing every other species on this list in raw volume. Despite the name "king brown," it isn't a true member of the brown snake family (genus Pseudonaja), it actually belongs to the black snake genus, Pseudechis. It's one of the longest snakes in Australia, with some individuals exceeding eight feet, and it thrives across a wide range of habitats, from grassy plains to scorching deserts. Unlike most of Australia's venomous snakes, which give birth to live young, the mulga snake is a rare exception that lays eggs, with clutches of up to nineteen at a time.

6. Northern brown snake (Pseudonaja nuchalis)

The northern brown snake belongs to a wider complex of brown snake species found across northern and central Australia, occupying a broad range of habitats from semi-arid country to farmland. As with other brown snakes, no antivenom has been developed specifically for this species; medical teams instead use the general antivenom made for brown snakes (genus Pseudonaja), which is effective thanks to the similarity of venom across the genus. It's a day-active snake that, in rural areas, often shelters in debris left behind by people, including old tires, sheets of corrugated metal, or woodpiles, which raises the odds of an accidental encounter with humans.

5. Common death adder (Acanthophis antarcticus)

The common death adder, along with the taipan and the brown snake, ranks among the three most feared of Australia's venomous snakes because of its behavior. Unlike most snakes, which avoid contact with people, this species is a classic ambush hunter: it buries itself almost completely under leaf litter and stays motionless, wriggling the thin tip of its tail to mimic a worm or grub and lure lizards and small mammals within range. It has the longest fangs of any Australian snake and can deliver one of the fastest strikes ever recorded on the continent, despite its short, stocky, slow-looking body. Unlike most snakes on this list, it doesn't lay eggs; it gives birth to live young instead. Its numbers have declined in some regions because the snakes die after trying to eat toxic cane toads.

4. Mainland tiger snake (Notechis scutatus)

The mainland tiger snake is one of Australia's venomous snakes with the highest number of documented serious bites in the south and southeast of the country, where it lives close to wetlands, rivers, and the outskirts of towns and cities. It's a capable swimmer, able to dive while hunting frogs and other aquatic prey. Its banded pattern, which gives the snake its name, is highly variable and can be almost absent in some populations. It was one of the first Australian species for which a dedicated antivenom was developed, which has significantly reduced bite mortality since the mid-20th century.

3. Coastal taipan (Oxyuranus scutellatus)

The coastal taipan has the third most toxic venom of any land snake in the world and holds the record for the largest volume of venom ever extracted from a snake in a single laboratory milking. It has the longest fangs of any Australian snake, at roughly half an inch (about 13 mm), built for injecting venom into larger prey like rats and rabbits. Its venom combines powerful neurotoxins with components that disrupt blood clotting, and without antivenom, it can cause death in under thirty minutes. Unlike the inland taipan, the coastal taipan tends to be more aggressive when cornered, and it's found along coastal areas of northern and northeastern Australia, sometimes close to towns.

2. Eastern brown snake (Pseudonaja textilis)

The eastern brown snake has the second most toxic venom of any land snake in the world, despite having very short fangs of only about an inch. It's by far the species responsible for the most snakebite deaths in Australia every year, since it has successfully adapted to rural and urban areas across the entire eastern half of the country, hunting rodents, frogs, and other reptiles. Its venom contains neurotoxins and powerful procoagulants that act directly on the blood; clinically, the most common outcome in bite victims is sudden collapse combined with a severe clotting disorder, with progressive paralysis being a less consistent feature than the venom's neurotoxic profile alone would suggest a clinical pattern Australian toxinologists continue to study. The snake moves quickly and stays highly alert, and it can turn aggressive if it feels threatened or cornered.

1. Inland taipan (Oxyuranus microlepidotus): the most venomous snake in the world

The inland taipan tops this ranking of the most venomous snakes in Australia because it produces the most toxic venom of any land snake known to science. According to various scientific sources, a single bite reportedly contains enough venom to kill around 100 adult humans, far beyond any other land snake on the planet. Its hunting technique is just as efficient as its venom: rather than biting and holding on, it strikes rapidly several times in a row, releasing its grip each time, to inject as much venom as possible into rodent prey without risking a bite in return. It's able to change the shade of its skin with the seasons, darkening in winter to absorb more heat from the sun and lightening in summer to reflect it a temperature-regulating trick rarely seen in reptiles. Despite its reputation as the "fierce snake," it's a surprisingly shy, reclusive species that lives in clay cracks and abandoned burrows across remote, arid parts of central Australia, so encounters with people are extremely rare, and no confirmed human death has ever been attributed to this species. Its scientific name, Oxyuranus microlepidotus, literally translates to "sharp tail" and "small-scaled," a reference to the fine, glossy texture of its skin.

Frequently asked questions about Australia's venomous snakes

What is the most venomous snake in Australia?

The most venomous snake in Australia is the inland taipan (Oxyuranus microlepidotus). Its venom is considered the most toxic of any land snake in the world: a single bite reportedly carries enough toxin to kill around 100 adults. Despite this, it's a shy snake that lives in remote parts of central Australia and very rarely comes into contact with people.

What is the most venomous snake in the world?

The inland taipan (Oxyuranus microlepidotus), native to Australia, is considered the most venomous land snake in the world based on its median lethal dose (LD50) in laboratory testing. It's followed by the eastern brown snake and the coastal taipan, both also native to Australia, which explains why this one country holds the world's most toxic snake venoms.

What snake causes the most deaths in Australia?

Even though it doesn't have the most potent venom, the eastern brown snake (Pseudonaja textilis) is responsible for the majority of snakebite deaths in Australia. That's because it's extremely common in urban and rural areas across the eastern half of the country, moves very quickly, and can respond defensively when it feels threatened by people unlike the inland taipan, which lives far from populated areas.

Is there an antivenom for Australia's venomous snakes?

Yes. Australia produces species-group-specific antivenoms, including ones for brown snakes, tiger snakes, taipans, black snakes, and death adders, plus a polyvalent antivenom that covers several species at once. For species without a dedicated antivenom, such as the small-eyed snake or the northern brown snake, doctors use the antivenom made for a species with a chemically similar venom.

How many venomous snakes are there in Australia?

Australia is home to roughly 140 species of land snakes and about 32 species of sea snakes. Of those, somewhere between 100 and 110 are venomous, though only around 12 species carry venom potent enough to kill a person without medical treatment.

What should you do if you're bitten by a venomous snake in Australia?

If someone is bitten by a snake in Australia, the first step is to keep the person still and calm, since venom spreads mainly through the lymphatic system and movement speeds that process up. Health authorities recommend applying a firm pressure immobilization bandage from the fingers or toes up to the top of the bitten limb, without removing clothing or washing the wound, and calling Australia's emergency number, 000, right away so the person can receive medical care and antivenom.