is a common title and name used across India and Pakistan:
- Naik (military rank), the equivalent to Corporal in the Indian and Pakistan Armies and formerly in the British Indian Army
- A surname used by various ethnic groups in India
- Nayak (disambiguation), a title used across India
- Naiker, a title used across India
- Zakir Naik (born 1965), an Indian Muslim scholar
It is also an alternate spelling of the placename for Naic, Cavite in the Philippines.