Swami Vivekananda was not a Śaivaite or Vaiṣṇava in the sectarian sense.
If you have to classify, he was closest to Śākta (Kali-worship tradition), but even that is incomplete because he rose above all sects.
Here is the accurate breakdown:
✔️ 1. Raised in a Vaishnava household
• Vivekananda (Narendranath Datta) was born into a Bengali Kayastha family, where the traditional household religion was generally Vaishnava-leaning.
• His family worshiped Narayana, Krishna, and Rama.
✔️ 2. Initiated by Sri Ramakrishna — a Shakta
• Sri Ramakrishna was primarily a Kali bhakta (Śākta), though he practiced all Hindu paths.
• Vivekananda was deeply shaped by Ramakrishna’s vision of Kali as the Divine Mother.
• He even prayed to Kali at Dakshineswar during a personal crisis (which he later described as transformative).
✔️ 3. His mature philosophy: Non-sectarian Vedanta
Vivekananda explicitly rejected all sectarian labels:
• He saw Shiva, Vishnu, Kali, Durga, Rama, Krishna as different manifestations of the one Brahman.
• In his lectures he repeatedly says:
“We Hindus are not sectarians; we accept all paths.”
✔️ 4. Did he identify as Śaiva or Vaiṣṇava?
No.
He identified as:
• Advaita Vedantin
• Shiva–Shakti–Vishnu–Brahman are one
• Universalist
But emotionally, he had a special devotion to Kali, not Shiva or Vishnu specifically.
✔️ So the closest accurate answer:
He was raised with Vaishnava influences, initiated by a Shakta guru, and became a non-sectarian Advaitin; therefore he cannot be categorized as strictly Saiva or Vaishnava.
If you want a one-line summary:
Vivekananda was spiritually a universalist Vedantin with strong Shakta influence.
—(Courtesy: OpenAI)