An acronym for renewal is not standard, because renewal is usually just a regular noun rather than a phrase that gets abbreviated. One common abbreviation you may see is REN.

Simple answer

  • REN = renewal
  • renew. is also used as an abbreviation in some contexts

Note

If you need an acronym for a specific use, like a brand name, project title, or slogan, I can help create one that fits the meaning of renewal.