Meaning and name origin
Iain is not a popular first name for males and an equally uncommon surname or last name for all people (2000 U.S. Census).
Displayed below is the baby name popularity of the name Iain for boys (2014 statistics).
Displayed below is a comparison of the popularity of the boy name Iain and its variant forms. Popular variation forms ranked in the Top 1000/100 are John (#26), Ian (#77), Juan (#98), Ean (#997), Ewan, Euan and Iain. (2014 statistics).
Iain is also pronounced similarly to Eoin, Ewin, Owain, Owin, Wain, Wayn, Win and Yann. Other suggested similar baby names are Bain, Cain, Dain, Fain, Kain, Pain, Rain and Zain. Like Iain, these names are not commonly used.