QamarudDin

QamarudDin is a masculine given name of Arabic origin that is widely used in South Asia and among Muslim communities in the Middle East. The name combines Qamar, meaning "moon," with ud-Din, meaning "of the faith" or "of the religion," yielding a meaning such as "moon of the faith." Because transliteration from Arabic and Persian-influenced scripts varies, it appears in several spellings, including Qamar-ud-Din, Qamaruddin, Kamruddin, and Kamr-ud-Din.

Historically, individuals bearing this name have appeared in religious, administrative, and scholarly roles within Muslim polities of the Indian subcontinent and the wider Persianate world. In modern usage, QamarudDin remains common in countries such as Pakistan, India, and Bangladesh, and among diaspora communities in the Gulf states, Europe, and North America.

The form of the name reflects regional pronunciation and transliteration conventions, rather than a change in core meaning. While there is no single person universally identified as "QamarudDin," the name is typically treated as a given-name entry in encyclopedic references.