长泽リオン appears to be a Japanese name. Here's the breakdown:

- 長澤 (ながさわ, Nagasawa) is a surname

- リオン (Rion) seems to be a given name written in katakana, which often indicates a foreign or creatively spelled name

Without more context, I can't provide specific information about this person. They could be an actor, athlete, artist, or any other type of public or private individual with this name.

If you're looking for more information about someone with this name, you might want to provide additional context or clarify what kind of person you're asking about.