Yes. You can become a Jain by sincerely embracing Jain principles and following the path of Jain practice, whether you were born in a Jain family or not. For lay followers, becoming Jain means adopting the Jain vows and living according to Jain ethics and teachings.

Key points:

• Three Jewels: Belief in the Three Jewels (correct faith, correct knowledge, correct conduct) and taking refuge in them.
• Core ethics: ahimsa (non-violence in thought, speech, and action), satya (truth), asteya (non-stealing), brahmacharya (celibacy or proper conduct according to one’s stage in life), and aparigraha (non-attachment/limitation of possessions).
• Lay practice: Many Jains follow daily/regular practices such as samayik (meditative reflection), swadhyaya (study of scriptures), and vastu-sutra-like conduct in daily life, in addition to following the five anuvratas (in a moderated form for laypeople).
• For renunciation: Digambara and Śvetāmbara traditions have different guidelines for monks and for formal renunciation, but lay people can become Jain by adopting the vows and living as a Jain in daily life.

Notes on tradition:

• Digambara and Śvetāmbara communities differ in some practices and interpretations, including how vows are observed and the role of monastic vows. The essential aim—ahimsa, discipline, and spiritual progression—remains central in both.
• There isn’t a single universal “conversion ceremony” for lay people in Jainism; becoming Jain is about committing to the Jain path and living by its vows and teachings.

If you’d like, tell me which Jain community you’re drawn to (Digambara or Śvetāmbara) and your current level of commitment, and I can outline a simple, practical starter path tailored to that tradition.