Morelia spilota spilota is the nominate subspecies within the Carpet Python complex (Morelia spilota). Informally known as the Diamond Python. It is a medium to large snake, typically 5-6 foot long, although occasionally very large specimens (usually females) of about 2.5 or rarely 3 metres long have been found. They occur in coastal regions and adjacent ranges of south-eastern Australia, and can be found at the highest altitudes of any the Pythonidae. They are also the most southerly occurring python in the world, occurring as far south as far eastern Victoria.
At the northernmost limit of their range on the mid-north coast of NSW, they naturally intergrade with the Coastal Carpet Python (Morelia spilota mcdowelli).