The answer seems to be "yes". Plz don´t tell Doreen Virtue, fam! But OK, I suppose you could claim that it´s the Muslim version of Jesus...
Does the Kalacakra Tantra claim that Jesus is a demonic being?
Yes—but with an important qualification. The Kālacakra Tantra contains a passage that places Jesus among a group of prophetic figures belonging to an asura–nāga category, which can reasonably be translated in a demonic or anti-divine framework. But saying simply “the Kālacakra Tantra teaches that Jesus is a demon” is somewhat misleading.
The relevant passage is Kālacakra I.154. It lists:
Adam, Noah, Abraham, Moses, Jesus, the White-Clad One (probably Mani), Muhammad, and the Mahdi.
It says that these figures, associated with tamas, belong to the asura-nāga caste/family.
What does asura-nāga mean here?
This is not simply the ordinary Buddhist statement that someone is a non-Buddhist. The passage is embedded in the Kālacakra's description of the mleccha/barbarian religious tradition and its prophetic lineage.
The passage continues by describing a portion of the asura caste as taking the form of powerful and merciless mlecchas.
So, in the text's mythological framework, Jesus is indeed associated with a supernatural/demonic category.
But there is a crucial distinction:
Jesus himself ≠ necessarily an individual demon in the ordinary sense.
Rather, the Kālacakra narrative is categorizing the prophetic tradition associated with the non-Indic "barbarian" religions as originating from an asura/nāga lineage. Jesus is one of the figures incorporated into that lineage.
And this is historically quite interesting
The passage is not primarily an attack on Christianity.
The Kālacakra literature emerged in the Indian Buddhist world around the late 10th/early 11th century, in a period when Buddhist India was encountering Islamic political and religious expansion. The text consequently develops an elaborate account of the mleccha tradition, including Islamic practices, prophecy, chronology, astronomy and the future conflict between Śambhala and the mlecchas.
The inclusion of Adam → Noah → Abraham → Moses → Jesus → Mani → Muhammad → Mahdi is therefore especially revealing. It appears to be an attempt to understand the Abrahamic prophetic tradition within an Indian Buddhist cosmological framework rather than a detailed discussion of Christian theology.
There is also evidence that the text's authors had surprisingly specific information about Islam: for example, the Kālacakra tradition incorporates an Islamic calendar date corresponding to 1012–1013 CE, which helps establish its historical context.
One subtle point that may interest you
There is an intriguing ambiguity in the treatment of Jesus.
The Kālacakra tradition does not simply ignore or deny him. Jesus (Īśa/Isa) is actually recognized as a significant prophetic figure and incorporated into a larger sacred-history scheme. One scholarly discussion notes that the text describes Jesus as Isa Masih, "Jesus the Messiah," and even gives him a distinctive white appearance and white clothing.
So the attitude is roughly:
"Jesus is a genuine historical/religious prophet, but the religious dispensation associated with him belongs to the asura/mleccha side of the cosmic order."
That's rather different from saying:
"Jesus was merely a fictional demon."
And it becomes even more interesting when you remember that Kālacakra ultimately presents its own Buddhist teaching as the means of transcending the limitations of these competing religious systems.
So yes, there really is a basis for the claim you've encountered, and it isn't an Internet invention. But "Jesus is a demon according to the Kālacakra Tantra" is an overly compressed translation of a considerably more complicated passage and cosmological classification.
