In the year 1627...
- The aurochs becomes extinct.
- The Thirty Years' War rages in Germany.
- The Manchus invade Korea, making it a quasi-vassel state.
- The Trịnh–Nguyễn War erupts in Vietnam between the ruling Trinh and Nguyen clans, and will drag out until 1670.
- Cardinal Richelieu orders an assault on the Huguenots at La Rochelle. An English attempt to break the siege, commanded by the Duke of Buckingham, fails.
- In the "Forced Loan of 1627", English king Charles I, desperate for cash to fund his wars against France and Spain after having dissolved Parliament the previous year, issues a royal decree forcing nobles to loan him money.
- The Barbary Pirates raid Iceland, capturing 242 Icelanders to sell into slavery and slaughtering many others.
- Francis Bacon's New Atlantis is published posthumously.
- Johannes Kepler publishes his Rudolphine tables for calculating the paths of the planets, based on the work of Tycho Brahe.
- The first German opera, "Dafne" by Heinrich Schutz, is produced in Torgau.
- French librarian Gabriel Naudé, later the head librarian of the Bibliothèque Mazarine, publishes the first study of library science, Advice on Establishing a Library.
These people were born in 1627:
These people died in 1627:
1626 - 1627 - 1628