Mehrdad
Mehrdad is Persian in origin and commonly used by Muslim Persian-speakers. It is cultural/linguistic rather than derived from Islamic scripture; it is acceptable as a personal name in Muslim communities.
In Persian, Mehr can mean 'sun', 'affection', or refer historically to the deity Mithra; in the compound Mehrdad it conveys warmth, affection, or a covenantal gift.
Mehrdad is primarily found among Persian-speaking populations in Iran, Afghanistan, and Tajikistan, and among the Persian diaspora; it is rare elsewhere.
Direct feminine equivalents are uncommon; related feminine Persian names use the element Mehr such as Mehri or Mehrnaz, though Mehrnaz is more widely used.
The components 'Mehr' and '-dad' are attested in Middle and New Persian onomastics. The exact compound appears in historical Persian name-lists and inscriptions; it reflects continuity of Persian naming elements into Islamic-era usage.