The shortest reigning monarch generally recognized by historians is King Louis XIX of France, who was king for about 20 minutes in July 1830 before abdicating.

Who was the shortest reigning monarch?

  • King Louis XIX (Louis-Antoine, Duke of AngoulĂŞme) briefly became king when his father, King Charles X of France, abdicated during the July Revolution of 1830.
  • Around 20 minutes later, Louis XIX himself signed an act of abdication, giving him an extraordinarily short reign by any standard.

Shared record: another 20‑minute king

  • Guinness World Records notes that Louis XIX shares this “shortest reign of a monarch” record with Crown Prince LuĂ­s Filipe of Portugal.
  • LuĂ­s Filipe technically became king when his father, King Carlos I, was assassinated on 1 February 1908, but he died of his own wounds about 20 minutes later, leaving him a monarch in name for only those minutes.

Why historians debate this

  • Some historians and royalists argue over whether these men “really” ruled, because their reigns were more legal-technical than practical, with no time to exercise power.
  • Despite this, reference works and record keepers widely list them as the shortest reigning monarchs, since succession in hereditary monarchies typically occurs instantly at a predecessor’s death or abdication.

Other very short reigns

  • Lists of short-lived rulers also mention figures who ruled for days or weeks, such as certain Macedonian, Chinese, or medieval European monarchs, but none beat the 20‑minute record.
  • Modern articles and history features often highlight these ultra-brief reigns as curiosities in royal history, especially when discussing record-breaking monarchs at both the short and long ends of the spectrum.

Quick SEO-style summary

  • Focus term “shortest reigning monarch”: King Louis XIX of France, with a reign of about 20 minutes, often tied with LuĂ­s Filipe of Portugal for the same duration.
  • “Latest news” and “forum discussion” angles tend to frame these monarchs as quirky historical trivia rather than subjects of active political debate today.

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