Top 10 Biggest Snakes in the World

Biggest Snakes
© Kurit afshen/

Written by Rebecca Bales

Updated: October 16, 2023

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What is the biggest snake in the world? What is the longest snake in the world? With more than 3,000 species of snakes living around the globe, there are a lot of candidates to consider.

The largest snakes listed here were chosen because of their extraordinary length.

The snakes with tremendous length combined with a large weight ranked even higher on the list.

Infographic of the 10 Biggest Snakes in the World
The green anaconda is the largest snake in the world and grows to 30 feet long.

With that said, let’s discover the world’s largest snakes:

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#10. King Brown Snake – 11 Feet Long

Biggest Snakes: The King Brown Snake

The King

Brown Snake

usually shelters in burrows, deep soil cracks, logs, rock piles, and timber or rubbish piles when living near humans.

©Ken Griffiths/

The king brown snake (Pseudechis australis) can grow to a length of 11 feet. Though this snake is 11 feet in size, it only weighs around 13 pounds. The king brown snake isn’t the biggest snake in the world, but its size is massive.

This venomous snake lives in the grasslands, woods, and scrublands of central Australia. Its mixture of yellow and brown scales helps to camouflage it as it moves its long body in search of frogs and lizards. It has a conservation status of Least Concern with a decreasing population.

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#9. King Cobra – 13 Feet Long

King cobra

The King Cobra’s hood is actually a part of its ribs.

©Eric Isselee/

The king cobra (Ophiophagus hannah) can grow to be 18 feet in length with a weight of 20 pounds. The king cobra is not the largest snake in the world, but it does claim the title of the longest venomous snake on earth!

They live in India, and Southeast Asia and are found in rainforest habitats. These snakes can make themselves look even bigger when they ‘stand up’ or lift the top half of their body off the ground, in response to a threat. Its conservation status is Vulnerable, but it is a protected species in Vietnam.

The king cobra‘s hoods are actually ribs. They’re known for their size, however, they use sound to defend themselves in the wild. They have very long lifespans compared to other snake species, and their biggest predator is the mongoose.

#8. Boa Constrictor – 13 Feet Long

Biggest Snakes: The Boa Constrictor

Boa constrictors may live in rainforests or semi-desert areas.


The boa constrictor (Boa constrictor) and a king cobra can both grow to be 13 feet in length. However, the boa constrictor is ranked higher on the list of the world’s largest snakes because it’s the heavier of the two at 60 pounds. Boa constrictors measure 2 feet in size as newborns.

These are giant snakes but are not the largest in the world. However, they are among them. These snakes live in South America. Some of them live in rainforests while others live in semi-desert habitats.

#7. Black Mamba – 14 Feet Long

Biggest Snakes: The Black Mamba

Black Mambas are among the fastest snakes in the world, slithering at speeds of up to 12.5 miles per hour.

©Cormac Price/

The Black Mamba (Dendroaspis polylepis) can grow to a length of 14 feet, making it the seventh-biggest snake in the world. This snake is venomous and lives in savannas in the eastern and central parts of Africa. It isn’t the largest snake in the world, but it is very long.

The slender black mamba only weighs about 3 pounds making it easy to move its long body at a speed of 12.5 miles per hour. The conservation status of this reptile is Least Concern with a stable population.

#6. African Rock Python – 16 Feet Long

Biggest Snakes: The African Rock PythonBiggest Snakes: The African Rock Python

Like all pythons, the African Rock Python is non-venomous. It kills by constriction, ambushing, and coiling around its prey.


The African rock python (Python sebae) can grow to a length of 16 feet. This reptile can have a weight of up to 250 pounds. It lives in the grasslands and the savannas of Africa.

This snake wraps its large body around prey using its powerful muscles to suffocate them. These snakes are known to eat antelope, crocodiles, warthogs, and other large-size prey.

#5. Indian Python – 20 Feet Long

Biggest Snakes: The Indian Python

The main threats to Indian pythons include habitat loss, collection for the pet trade, and hunting for their skin.


The fifth biggest snake in the world is the Indian python (Python molurus), which can grow to a length of 20 feet and sometimes longer. They have a weight of around 150 pounds. This reptile lives in the forests of Pakistan, India, Nepal, and Sri Lanka.

This snake has a diet of small mammals and birds. Like other pythons, it captures its prey with strong jaws, then wraps its body around the animal to suffocate it. These snakes are massive, however, they still aren’t the largest snake in the world.

Unfortunately, this reptile has a conservation status of Vulnerable. It’s hunted for its skin and consumed as food in some places. Loss of habitat is also affecting the population of this snake.

#4. Burmese Python – 23 Feet Long

Biggest Snakes: The Burmese Python


pythons have become an invasive species in the Everglades

©Heiko Kiera/

Ranked among the world’s largest snakes, the Burmese python (Python bivitattus) has a length of up to 23 feet and can weigh up to 200 pounds. This reptile lives in the marshes of southeast Asia including China. Its body has a girth, or thickness, equal to a telephone pole! Like other pythons on this list, a Burmese python wraps its strong body around its prey to suffocate it.

Their conservation status is Vulnerable with a decreasing population. These snakes are trapped and killed for their skin and used as food. Habitat destruction has also contributed to decreasing the prey of this snake, therefore, lowering its overall population.

Burmese pythons have become an invasive species in the Everglades of Florida due to escaping captivity as pets. Recently, the largest invasive Burmese python was captured in Florida. The female snake is 18 feet long and weighs 215 pounds. Although they can weigh as much as a person, they aren’t the largest snake in the world.

The Conservancy of Southwest Florida has been implanting radio transmitters in male scout snakes and releasing them into the wild to locate breeding aggregations where large, reproducing females can be found.

They seek to remove these females from the wild in hopes of slowing their growing numbers.

#3. Amethystine Python – 27 Feet Long

Biggest Snakes: The Amethystine Python

Amethystine Pythons live in tropical forests, savannas, and shrublands.


The amethystine python (Morelia amethistina) can grow to a length of 27 feet and weigh 33 pounds, making it the third biggest snake in the world. Females are usually larger than males. This reptile lives in Indonesia, Papua New Guinea, and Australia. Its habitat includes tropical forests, savannas, and shrublands. The conservation status of this snake is Least Concern with a stable population.

Although these snakes are huge, they aren’t the largest snake in the world.

#2. Reticulated Python – 29 Feet Long

Biggest Snakes: The Reticulated Python

The Reticulated Python lives in the rainforests and marshes of southeast Asia, Bangladesh, and Vietnam.


A reticulated python (Python reticulatus) can grow to a length of 29 feet and has a weight of up to 595 pounds! It’s called a reticulated python because of the mixed pattern of its brownish-yellow and black scales. The female reticulated python is usually larger than the male. This reptile lives in the rainforests and marshes of southeast Asia, Bangladesh, and Vietnam. Their conservation status is Least Concern.

#1. Green Anaconda – 30 Feet Long

Biggest Snakes: The Green Anaconda

The Green Anaconda gives birth to live young that measure about two feet long when they are born.

©Patrick K. Campbell/

The green anaconda (Eunectes murinus) is the largest snake in the world! It grows to a length of 30 feet and can weigh up to 550 pounds. If you stretched out a green anaconda to its full length, it would be about as long as the average school bus! Normally, female green anacondas are larger than males.

The snake that claims the title of biggest snake in the world lives in the Amazon rainforests and swamps of Brazil. They are carnivores capturing their prey of wild pigs and deer by wrapping their tremendous bodies around them and squeezing until the prey is dead.

Honorable Mentions: More Big Snakes

There are a few snakes that didn’t make our list but should have due to their huge size.

Papuan Olive Python

Largest Pythons - Papuana Python

The Papuan olive python is known as a gentle giant in spite of its 13-foot length.

©Sibons photography/

The Papuan olive python may look intimidating with its 13-foot possible length, but these snakes, native to New Guinea, are often referred to as gentle giants because of their non-aggressive natures. They come in shades of fawn, olive, brown, or light brown.

Yellow Anaconda

Yellow Anaconda

Female yellow anacondas can reach max lengths of 13 feet.

©Chris Tefme/

The yellow anaconda is a constrictor species endemic to South America. They are among the larger snakes in the world, with females capable of growing to 13 feet in length. These snakes are quite exotic with their bright yellow scales overlayed with black markings.

Eastern Indigo Snake

Eastern Indigo Snake (Drymarchon couperi) isolated on white background.

The Eastern Indigo Snake (Drymarchon couperi) is the longest snake in North America.


Able to grow to a length of nearly 8 feet on average, the Eastern Indigo snake is the longest snake found in North America. The longest ever grew to 9.2 feet long. These sleek, slender snakes are characterized by dark matte scales.

Summary of the Top 10 Biggest Snakes in the World

Here’s a look back at the 10 biggest snakes inhabiting our planet:

1Green Anaconda30 feet long
2Reticulated Python29 feet long
3Amethystine Python27 feet long
4Burmese Python23 feet long
5Indian Python20 feet long
6African Rock Python16 feet long
7Black Mamba14 feet long
8Boa Constrictor13 feet long
9King Cobra13 feet long
10King Brown Snake11 feet long

Other Dangerous Animals Found in the World

Scarface the lion lounging

The lion is the second-largest of the big cats and one of the most dangerous animals in the world.

©Tony Campbell/

The lion is not only one of the largest big cats, coming in second to the tiger, but it is also one of the most dangerous animals. Lions are apex predators of the African savannah and have no natural predators and are even more dangerous when protecting their territory or their young from other predators. It is estimated that this king of the jungle kills an average of 22 people per year in Tanzania alone. While deaths do happen in other locations, the global numbers aren’t detailed.

The African buffalo is thought to be one of the most dangerous animals in Africa because of their reputation for lying in wait for pursuers and then charging them at the last minute. Hunters are very wary of this large sub-Saharan African bovine, of which there are five subspecies including the most aggressive cape buffalo. The cape buffalo is at the height of aggression when one of the herd’s calves is under attack.

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About the Author

Rebecca is an experienced Professional Freelancer with nearly a decade of expertise in writing SEO Content, Digital Illustrations, and Graphic Design. When not engrossed in her creative endeavors, Rebecca dedicates her time to cycling and filming her nature adventures. When not focused on her passion for creating and crafting optimized materials, she harbors a deep fascination and love for cats, jumping spiders, and pet rats.

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