Gracious
Iyan is a modern phonetic variation of Ian, which is the Scottish Gaelic form of John. It ultimately derives from the Hebrew name Yochanan, meaning 'Yahweh is gracious.' While rare, this spelling provides a contemporary, international feel to a deeply traditional name.
Less common today
Iyan isn't in the latest US Top 1000. It last peaked at #4,755 in 2000.
US births per 5-year period, 1990βpresent (SSA data).