
Put away your comb, and stop brushing your hair. In time, it will section off and tangle up all on it's own, regardless of race or religion. Because of this we can generally assume that dreadlocks are as old as the human race and have been with us since the very beginning of our existence. This makes it nearly impossible to pinpoint exactly when or where societies began to wear these twisted locks of hair as a cultural or religious symbol, but we have found several examples of their existence throughout our history.
Dreadlocks in the Middle East
The biblical Nazirite hero Samson was said to have worn 7 locks of hair, which were his strength. When these 7 locks were cut from his head, he was finally captured. Nazirites cannot cut their hair as part of a vow to God, and it is entirely likely that dreadlocks were common among them. The tale of Samson is at least 3000 years old, meaning dreadlocks were probably a well defined cultural and religious symbol well before then.
Dreadlocks in India
The Hindu god Shiva was said to have protected the earth from the reckless flow of the ganges river as She (the river) fell to the earth. Ganga was trapped in Shiva's matted hair, and was allowed to flow gently from his locks. Shiva is also responsible for the creation and destruction of the universe as Nataraja. As he dances, his dreadlocks (or "jataa" as they are known in India) fall around him and dislocate or destroy anything they encounter. Stories of Shiva and his predecessors may date back as much as 3,500 years ago.
Sadhu and sadhiv are holy men and women who renounce a normal life in order to pursue spiritual enlightenment and liberation. Many allow their hair to become locked as a way of giving up their vanity, as well as their connection with modern society. Many are followers of Shiva (or one of his many forms) and are considered to be holy by many people...they are often asked to bless weddings and the sick or settle conflicts between individuals and families.
Dreadlocks in Africa
It has been rumored that the ancient Egyptians may have worn their hair in dreadlocks, and that mummies have been unearthed with dreadlocks still on their heads. Unfortunately, we have found very little evidence to support this. Egyptians may have indeed worn dreads, and many of their drawings and hieroglyphs seem to depict hair styled as dreads, but we cannot say for sure that dreads were common among egyptians.
The Baye Fall are a sect of the Islamic Mouride Brotherhood in West Africa, and they are known in part for their colorful clothing, and their dreadlocks which they call ndiange (strong hair). The Baye Fall were established during the late 1800's, and show their devotion to go through their hard labor.
Dreadlocks in the Americas
In Peru, mummies have been found with long, thick dreadlocks in the Cementerio de Chauchilla. These mummies pre date the Incan civilizationby several hundred years, and their culture is believed to be responsible for creating the hundreds of Nazca Lines scattered across the desert plateau.
The historian William H. Prescott wrote of Aztec priests wearing dreadlocks in his book, The History of the Conquest of Mexico in 1843. When describing human sacrifices, Prescott wrote, "On the summit he was received by six priests, whose long and matted locks flowed disorderly over their sable robes, covered with hieroglyphic scrolls of mystic import."

Dreadlocks in Europe
Although many other sites claim that Ceasar remarked that Celts had "hair like snakes," there is no evidence to suggest he ever said such a thing. However, there are roman coins dating back 2000 years that may depict dreadlock-like hair on Gaulish (celtic) figures, minted after the roman expansion into their territory.
Dreadlocks in the Caribbean
It is within this region that the actual term "dreadlocks" was developed. For many westerners, dreadlocks are most heavily associated with the Rastafari movement. The movement dates back to the 1930's, although it wasn't until the late 40's that people began to wear their hair in locks. The actual term "dreadlock" has several possible beginnings. One version has it that the term came to be because these matted locks of hair gave a "dreadful" appearance...yet another version attributes the term to followers who "dread" or fear God.
Dreadlocks in Modern Society
Dreadlocks have come to mean many different things to many different people. Some among the counterculture movements have embraced dreadlocks as a symbol of rejection of today's society. This is likely derived from both the Rastafari rejection of western "Babylon" society, and the renouncing of/separation from society and modern comfort by the sadhu. Many people see dreadlocks as a way to embrace their own spirituality, although there are a growing number of people who have embraced dreadlocks simply because they like the look.