Cognomen Ī (I 
, Ii , Ī 
) , across the world, is a widespread surname. The family name Ī is habitual in Indonesia, where it is quite a common surname, Bermuda, and Brunei (explore the name in all countries). In absolute terms, this name is the most popular in Indonesia, India, and China. More prevalently, Ī is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| I | China, Indonesia, Canada, India, Japan |
| Ii | Indonesia, Canada, Japan, India, China |
| Ī | Myanmar, China |