No. Mahavir (Vardhamana Mahavir) and Buddha (Siddhartha Gautama) are not the same person. In Jainism, Mahavir is the 24th Tirthankara, a paraguru within the Jain tradition. Buddha is the founder of Buddhism in a separate spiritual tradition.

Key differences:

• Status: Mahavir is a Tirthankara in Jainism; Buddha is an enlightened teacher in Buddhism.
• Core teachings: Jainism emphasizes ahimsa (non-violence), aparigraha (non-attachment), and anekantavada (many-sided truth). Buddhism emphasizes Four Noble Truths and the Eightfold Path to liberation from suffering.
• Spiritual lineage: They belong to two distinct Jain and Buddhist paths with different scriptures, practices, and goals.

If you’d like, I can explain specific teachings of Mahavir in Jainism or how they compare to Buddhist ideas.