Tattooing has been practiced across the globe since at least Neolithic times, as evidenced by mummified preserved skin, ancient art, and the archaeological record. Both ancient art and archaeological finds of possible tattoo tools suggest tattooing was practiced by the Upper Paleolithic period in Europe. However, direct evidence for tattooing on mummified human skin extends only to the 4th millennium BC. The oldest discovery of tattooed human skin to date is found on the body of Ötzi the Iceman, dating to between 3370 and 3100 BC. Other tattooed mummies have been recovered from at least 49 archaeological sites including locations in Greenland, Alaska, Siberia, Mongolia, western China, Egypt, Sudan, the Philippines, and the Andes. These include Amunet, Priestess of the Goddess Hathor from ancient Egypt (c. 2134–1991 BC), multiple mummies from Siberia including the Pazyryk culture of Russia, and from several cultures throughout pre-Columbian South America.
Cemeteries throughout the Tarim Basin (Xinjiang of western China) including the sites of Qäwrighul, Yanghai, Shengjindian, Zaghunluq, and Qizilchoqa have revealed several tattooed mummies with Western Asian/Indo-European physical traits and cultural materials. These date from between 2100 and 550 BC.
In ancient China, tattoos were considered a barbaric practice, and were often referred to in literature depicting bandits and folk heroes. As late as the Qing, it was common practice to tattoo characters such as 囚 ("Prisoner") on convicted criminals' faces. Although relatively rare during most periods of Chinese history, slaves were also sometimes marked to display ownership.