Beatus, meaning blessed in Latin, may mean:
- a term in the Catholic Church for a person (Beata if female) who has been beatified, the stage before being declared a saint.
- Saint Beatus of Liébana, a Spanish monk who lived in the 8th century, in San Martin de Turieno in Liebana. See below also.
- A copy, especially in illuminated manuscript form, of the Commentary on the Book of Revelations written by Saint Beatus of Liébana (above), is often just referred to as a Beatus. Many famous versions exist, especially in the Mozarabic style, such as the Morgan Beatus.
- Saint Beatus, Bishop of Amiens in France in the 5th century
- Beatus of Lungern or Saint Beatus of Beatenberg or Thun, a semi-legendary figure who is considered the saint of Switzerland.
- Beatus Rhenanus (also known as Beatus Bild), who lived 1485 -1547, a German humanist, religious reformer, and classical scholar.