20 Most Venomous Snakes in The World

Written By Jill Taylor

Because their powerful venom can cause serious damage, poisonous snakes are both fascinating and scary, making them some of the most feared animals. Here are 20 of the most venomous snakes in the world, shedding light on just how dangerous they are.

Inland Taipan

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The Australian Museum describes the Inland Taipain as, “a medium to large snake, with a robust build and a deep, rectangular-shaped head.” The Inland Taipan, or “fierce snake,” is the world’s most venomous snake. Its bite can be deadly in under an hour. Found in Australia, this shy snake rarely crosses paths with people, making encounters uncommon.

Eastern Brown Snake

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Found in Australia, the bite of an Eastern Brown snake can cause paralysis and blood clotting. Even though it’s small, it’s the deadliest snake in Australia, causing most of the snakebite deaths there. As the snake is so dangerous, it’s certainly one you want to be careful around.

Blue Krait

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It’s no wonder the Blue Krait is feared so much, as it’s one of Southeast Asia’s most dangerous snakes. Its venom can paralyze muscles and cause breathing problems, so it’s one you want to stay as far away as possible from. These snakes like to hide during the day and come out at night to hunt.

Black Mamba

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There are two major things the Black Mamba is infamous for and that’s being known for its speed and deadly venom. Found in Africa, it can bite several times and inject a lot of venom quickly, and if left untreated, a bite can cause death in a few hours.

Coastal Taipan

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Most of us are well aware that Australia has many venomous snakes, with another one being the Coastal Taipan. Its bite can cause severe pain and serious health issues by affecting the nervous system and blood. Even though it’s dangerous, it’s usually less aggressive than the Eastern Brown Snake.

King Cobra

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Everyone is aware of how dangerous cobras are, with the King Cobra being the world’s longest venomous snake and being able to deliver a lot of neurotoxic venom in one bite. You can find it in forests from India to Southeast Asia, mainly eating other snakes.

Many-banded Krait

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One snake you’ll want to stay far away from if you visit Southeast Asia is the many-banded krait. It has very dangerous venom that affects the nerves and can cause fatal breathing problems. Luckily, the snake is usually active at night and tries to stay away from people as much as it can.


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A venomous snake found in sub-Saharan Africa is the boomslang. Its venom affects blood clotting and causes large amounts of bleeding, but even though its venom is strong, it’s usually shy and rarely bites. Its green color helps it hide in the trees where it lives.

Tiger Snake

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The tiger snake, found in southern Australia and Tasmania, can get quite aggressive when it feels threatened. Its venom is very dangerous, as it impacts both the nerves and the blood. This snake is really adaptable and can live in different places, like forests and marshes, so always be aware.

Russell’s Viper

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A snake you should always be cautious of is Russell’s viper, which is a highly dangerous snake in Asia. Its bite causes intense pain, swelling, and bleeding issues, and it’s something you’ll need emergency care for. This snake is behind many bites in India and Southeast Asia and is often found in farmlands hunting for rodents.

Banded Sea Krait

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Not all venomous snakes are on land; the banded sea krait is found in the warm waters of the Indo-Pacific and has extremely toxic venom. It hunts in the ocean but comes ashore to rest and lay eggs. Despite its potent venom, it is generally docile and only bites when provoked.

Dubois’ Sea Snake

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Another sea snake that can cause serious harm is Dubois’ sea snake, found in the waters off Australia and New Guinea. It has venom that is highly neurotoxic and while human encounters are rare, they can be very deadly. This snake is adapted to life in the sea, where it hunts fish and eels.

Saw-Scaled Viper

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Found in arid regions from Africa to India, the saw-scaled viper is highly aggressive and venomous. Its venom causes severe bleeding and tissue damage. Despite its small size, it is responsible for many snakebite fatalities due to its widespread presence and irritable nature.


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Don’t get too close to the Fer-de-Lance, native to Central and South America, as it has venom that causes severe tissue damage and bleeding. It is highly aggressive and responsible for many snakebite incidents in its range. Its camouflaged appearance makes it difficult to spot in its natural habitat.

Puff Adder

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A snake that’s notorious for causing deaths is the Puff Adder, found throughout Africa. It has venom that causes severe pain, swelling, and tissue damage. It is responsible for more snakebite fatalities in Africa than any other species. Its robust build and cryptic coloration make it a formidable ambush predator.

Mojave Rattlesnake

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You’ll find the Mojave Rattlesnake in the southwestern United States and Mexico and this has one of the most potent venoms of any rattlesnake. Its bite can cause severe neurotoxic and hemotoxic effects. Despite its dangerous venom, it is generally shy and avoids humans.

Indian Krait

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If you ever visit India, then keep a lookout for the Indian krait, found across the subcontinent as it has venom that is highly neurotoxic. Its bite can cause paralysis and death within hours. It is often encountered in rural areas, leading to a high incidence of snakebite cases.

Western Taipan

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Don’t go stepping on the tail of the Western Taipan, also known as the Inland Taipan’s cousin, as it’s just as deadly. Found in the arid regions of Australia, its venom is neurotoxic and hemotoxic. It is less commonly encountered by humans, making bites rare but extremely dangerous.

Death Adder

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You don’t want to go anywhere near the Death Adder, found in Australia and New Guinea, as it has venom that can cause paralysis and death within six hours. It uses its tail to lure prey before striking. Despite its deadly nature, it remains elusive and rarely encountered by humans.

Philippine Cobra

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The last snake you want to be around is the Philippine Cobra, which is highly dangerous due to its ability to spit venom. Found in the Philippines, its venom can cause respiratory paralysis. It is often encountered in agricultural areas, increasing the risk of human contact.

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