Koenraad Elst (Dutch pronunciation: [ˈkunraːt ˈɛlst]; born 7 August 1959) is a Flemish author, known primarily for his adherence to the Hindutva ideology and support of the Out of India theory, which is regarded as pseudo-historical by mainstream scholarship. Scholars accuse him of harboring Islamophobia.

Elst was born into a Flemish Catholic family.

He graduated in Indology, Sinology and philosophy from the Catholic University of Leuven. During his student days, he was involved with Flemish nationalism. Between 1988 and 1992, Elst was at the Banaras Hindu University. In 1999, he received a PhD in Asian Studies from Leuven on Hindu revivalism; his doctoral dissertation was published as Decolonizing the Hindu Mind. Prema Kurien notes Elst to be unique among Hindutva-leaning scholars in that he had a relevant academic degree.

In two books, Update on the Aryan Invasion Debate (1999) and Asterisk in Bhāropīyasthān (2007), Elst argues against the academically accepted view that the Indo-European languages originated in the Kurgan culture of the Central Asian steppes and that the migrations to Indian subcontinent in the second millennium BCE brought a proto-Indo-European language with them. He instead proposes that the language originated in India and it spread to Middle East and Europe when the Aryans, (who were indigenous) migrated out. According to Elst, the linguistic data are a soft type of evidence and are compatible with a variety of scenarios. The dominant linguistic theories may be compatible with an out-of-India scenario for Indo-European expansion.

One of the few authors to use paleolinguistics, he is deemed as one of the leading proponents of the Indigenous Aryans (Out of India fringe theory). The theory has been rejected by the scholarly community and is not deemed as a serious competitor to the Kurgan hypothesis, except by some authors in India. He has also written against the Aryan Invasion Theory defending the Out of India fringe theory in a blog piece for Indian diaspora think tank, Bridge India.

Elst was an editor of the New Right Flemish nationalist journal Teksten, Kommentaren en Studies from 1992 to 1995, focusing on criticism of Islam and had associations with Vlaams Blok, a Flemish nationalist far-right political party. He has also been a regular contributor to The Brussels Journal, a controversial conservative blog.

In Ram Janmabhoomi vs Babri Masjid, Elst makes the case for the birthplace of Rama, the Hindu god/king to correspond with the site of Babri Masjid and concurrently portrays Islam as a fanatic bigoted faith. The book was published by Voice of India, a publication house that is self-describedly devoted to furthering the Hindu nationalist cause and had attracted immense criticism for publishing anti-Muslim literature in abundance. It was though praised by L. K. Advani, former deputy Prime Minister of India, who commanded an important role in the demolition of the said masjid. In Ayodhya and After (1991), Elst was even more explicit in the support of the demolition and termed it an exercise in national integration which provided "an invitation to the Muslim Indians to reintegrate themselves into the society and culture from which their ancestors were cut off by fanatical rulers and their thought police, the theologians". In another interview, Elst went on to claim that it was a justified act of revenge which enforced fears of Hindu repercussion, thus curtailing Muslim violence. He though has retrospectively rejected the use of violent force in the demolition of the temple and has urged the Muslims to contend with the construction of a peace monument.

An intellectual heir of the school of thought championed by Ram Swarup and Sita Ram Goel— the founders of the Voice of India, who were themselves highly critical of both Christianity and Islam—Elst is a prominent author of the house and adopts their hard-line stance against the two religions in his book. Elst argues that there existed an universal spirituality among all the races and faiths, prior to the introduction of "Semitic" faiths which corrupted it. In Decolonizing the Hindu Mind, he contends that the "need for 'reviving' Hinduism spring from the fact that the said hostile ideologies (mostly Islam) have managed to eliminate Hinduism physically in certain geographical parts and social segments of India, and also (mostly the Western ideologies) to neutralize the Hindu spirit among many nominal Hindus."

He is a vocal proponent of Hindutva, a Hindu nationalist movement which is typically associated with the Indian far-right and supports the Bharatiya Janata Party. Elst perceives Hindutva as a tool to decolonize the mental and cultural state of Indians and return to the past days of (supposed) Hindu glory. He has written in support of the view that the Vedic science was highly advanced and may be only understood by a Hindu mystic. The Saffron Swastika is widely regarded to be his magnum opus, which argues against the idea that the brand of Hindutva practiced by the Bharatiya Janata Party (BJP) / Rashtriya Swayamsevak Sangh are fascist in ideology. Advani had high regards for the work, terming Elst as a 'great historian' and even carried a "heavily marked" copy of the book from which he freely quoted the passages that discussed him.

In other essays and conferences, Elst has supported for outright attacks on the enemy ideology of Islam which, in his opinion, is supposedly inseparable with terrorism and hence, must be destructed. He calls for an Indian-ization of Muslims and Christians by forcing them to accept the supremacy of Hindu culture and terms it as the Final Solution for the Muslim Problem. In his 1992 book, Negationism in India: Concealing the Record of Islam, Elst attempts to demonstrate that there exists a prohibition of criticism of Islam in India and accuses secular historians (including the likes of Romila Thapar, Bipan Chandra, Ram Sharan Sharma et al.) of suffering from Hindu Cowardice wherein they ignore Muslim crimes against Hindu communities, in order to fulfill their Marxist agenda.

Anthropologist Thomas Blom Hansen describes Elst as a "Belgian Catholic of a radical anti-Muslim persuasion who tries to make himself useful as a 'fellow traveller' of the Hindu nationalist movement". Historian Sarvepalli Gopal deemed Elst to be "a Catholic practitioner of polemics" who was fairly oblivious of modern historiography methods. Meera Nanda deems him to be a far-right Hindu cum Flemish nationalist. Elst has engaged in historical revisionism and has been described variedly as a Hindu fundamentalist, pro-Hindutva right-wing ideologue, Hindutva apologist and Hindutva propagandist.

Meera Nanda has accused Elst of exploiting the writings of his intellectual forefathers over Voice of India, to "peddle the worst kind of Islamophobia imaginable". Sanjay Subrahmanyam similarly deems Islamophobia as the common ground between Elst and the traditional Indian far right.

Anders Behring Breivik, a Norwegian far-right terrorist, responsible for the 2011 Norway attacks extensively borrowed from his works, in writing his manifesto. The manifesto, among other things sought to deport all Muslims from Europe and quoted Elst in asserting the existence of a massive movement that was aimed to ''deny the large-scale and long-term crimes against humanity committed by Islam''.

• Nanda, Meera (11 July 2009). "Hindu Triumphalism and the Clash of Civilisations". Economic and Political Weekly. 44 (28): 106–114. JSTOR 40279263.
• Nanda, Meera (2011). The God Market: How Globalization is Making India More Hindu. NYU Press. ISBN 9781583672501.
• Guichard, Sylvie (2010). The Construction of History and Nationalism in India: Textbooks, Controversies and Politics. Routledge. ISBN 9781136949302.
• Anand, Dibyesh (2011). Hindu Nationalism in India and the Politics of Fear. Palgrave Macmillan US. ISBN 9781349371907.

• From Macaulay to Frawley, from Doniger to Elst: Why do many Indians need White saviours?