Athinganoi

The Athinganoi (Ἀθίγγανοι, singular Athinganos, Ἀθίγγανος, Atsinganoi) were a Manichaean sect regarded as Judaizing heretics who lived in Phrygia and Lycaonia but were neither Hebrews nor Gentiles. They kept the Sabbath, but were not circumcised. They were Shomer nagia.

Other sources mentioned that the Athinganoi were Simonians, and had nothing to do with the Manichean or Paulinic sect, and settled in the year of the East–West Schism in 1054 at Byzantium, and married Byzantine women, adopted Greek Orthodox Christianity and later assimilated in Slavic and Greek Population. In some studies the Athinganoi are described as remnants of the Indo-Greeks who left India in 400 AD during the Migration period.

Name
The etymology of the word is not certain, but a common determination is a derivation in Greek for "(the) untouchables"derived from a privative alpha prefix and the verb (θιγγάνειν,, "to touch"). The Manichean sect is mentioned in Soghdian sources.

Association with Roma
The name, a later variant form of which is (ἀτσίγγανοι), came to be associated with the Roma who first appeared in the Byzantine Empire at the time. is the root word for "cigano", "çingene", "cigány", "zigeuner", "tzigan", "țigan", and "zingaro", words used to describe members of the Roma in various European languages. Today many of these words are still used in a derogatory sense, albeit others are the most common exonym for them in a given language. The idea of Roma as sorcerers also plays a part in the apparent confusion between the (the Roma), and the.

The exact relationship between the and the Roma remains uncertain. Historians, such as Rochow, have suggested three different explanations for the association:
 * 1) The name may have been transferred from the Christian sect to the Roma because both had gained a reputation for fortune telling or because the Roma were perceived to have adopted the religious practices of the sect.
 * 2) The popular Greek name for the Roma,, may have been original and unrelated to the , with the association of the two groups in Byzantine writings was due to ignorance and confusion between superficially similar names.
 * 3) The name Athinganoi may have been given to any itinerant people who came from abroad and were perceived to practice a different religion, with the term only later applying more narrowly to the Roma.

Purported doctrines according to Christian polemicists
An earlier, and probably quite distinct, sect with the same name is refuted by Marcus Eremita, who seems to have been a disciple of St. John Chrysostom.

They were regarded as Judaizing Heretics. About AD 600, Timotheus, Presbyter of Constantinople, in his book De receptione Haereticorum adds at the end of his list of heretics who need rebaptism the Mandopolini, "now called . They live in Phrygia, and are neither Hebrews nor Gentiles. They keep the Sabbath, but are not circumcised. They will not touch any man. If food is offered to them, they ask for it to be placed on the ground; then they come and take it. They give to others with the same precautions".