Barthold Georg Niebuhr was a Danish–German statesman, banker, and historian who became Germany's leading historian of Ancient Rome and a founding father of modern scholarly historiography. By 1810 Niebuhr was inspiring German patriotism in students at the University of Berlin by his analysis of Roman economy and government. Niebuhr was a leader of the Romantic era and symbol of German national spirit that emerged after the defeat at Jena. But he was also deeply rooted in the classical spirit of the Age of Enlightenment in his intellectual presuppositions, his use of philologic analysis, and his emphasis on both general and particular phenomena in history.

Barthold Heinrich Brockes (September 22, 1680 – January 16, 1747) was a German poet.

Bartholomaeus of Drahonice was a Bohemian soldier, and author of a chronicle of the Hussite revolution.

Bartholomew Gill was the pen name of Mark C. McGarrity, an Irish-American crime fiction and mystery novelist and newspaper features writer and columnist writing on nature and outdoor recreation for The Star-Ledger. He was the author of 22 mystery novels, set in Ireland, and featuring a "resourceful police detective named Peter McGarr." For his pen name, McGarrity used the name of his maternal grandfather, Bartholomew Gill, who "was a great storyteller." McGarrity wrote five novels and a work of nonfiction under his real name, and his writings for the Star-Ledger were published under his true name.

Bartholomew of Neocastro was an Italian jurist, and author of a chronicle called the Historia Sicula, which covers the years from 1250 to 1293.

Bartholomew of Neocastro was an Italian jurist, and author of a chronicle called the Historia Sicula, which covers the years from 1250 to 1293.

Bartholomew of Pisa was an Italian Franciscan and chronicler.

Bartle Breese Bull or Bartle Bull III is an American businessman and writer. Bull is a former editor of the Middle East Monitor and foreign editor of Prospect, a leading London-based political and cultural magazine.

George Ernest “Bartlett” Adamson was an Australian journalist, poet, author and political activist.

Bartol Kašić was a Jesuit clergyman and grammarian during the Counter-Reformation, who wrote the first Illyrian grammar and translated the Bible and the Roman Rite into Illyrian.