How to write Riley in Japanese
In Japan, Riley is written in katakana: ライリー, pronounced “rairī”. That's the spelling to use on a form, a name tag, or when you introduce yourself.
The kanji above are ateji — characters picked because they sound like the name. There's no single official version, so go with the one whose meaning you like best.
Riley in kanji, character by character
More names in Japanese
Kanji meanings from KANJIDIC2 © EDRDG (CC BY-SA 4.0).