The five largest snakes in the world by length and size are:
- Reticulated Python (Python reticulatus) – Known as the longest snake in the world, it can reach lengths of up to 30 feet (9 meters), though the average length is around 20 feet (6 meters).
- Green Anaconda (Eunectes murinus) – The heaviest snake in the world, the green anaconda can weigh over 500 pounds (227 kg) and grow up to 30 feet (9 meters) in length.
- Burmese Python (Python bivittatus) – Another massive snake, it can grow to lengths of 18 feet (5.5 meters) and sometimes even longer.
- Indian Python (Python molurus) – Similar in size to the Burmese python, it can grow up to around 20 feet (6 meters) in length.
- Amethystine Python Amethystine Python – The largest species of python in Australia, it can grow up to around 26 feet (8 meters) in length.
These snakes are known for their impressive size, and their length or mass often varies based on diet, environment, and other factors.



