HRH most commonly stands for “His Royal Highness” or “Her Royal Highness” , a formal style used for certain high‑ranking members of royal families, especially princes and princesses.

Basic meaning

  • HRH is a formal style (a way of addressing someone), not a name or job.
  • It expands to “His Royal Highness” when referring to a man, and “Her Royal Highness” for a woman.
  • It is used mainly for senior royals such as princes, princesses, and sometimes their spouses, depending on that monarchy’s rules.

How it’s used with royals

  • In writing, you might see it before a name, for example: “HRH The Prince of Wales” or “HRH Princess Anne”.
  • It signals higher status than a plain “Highness” (HH) or other styles sometimes used for lower‑ranking royals.
  • Who gets to use HRH is usually decided by the reigning monarch and set out in formal legal documents (such as letters patent in the UK).

Other, less common meanings

Outside royal contexts, “HRH” can have unrelated technical or niche meanings (for example, in medicine, engineering, or as an airport or station code), but these are rare compared with the royal title sense.

TL;DR: When people ask “what does HRH mean?”, they almost always mean the royal style His/Her Royal Highness , used before the names of certain princes, princesses, and other senior royals.

Information gathered from public forums or data available on the internet and portrayed here.