Cornelis or Cornelius Ketel (18 March 1548 – 8 August 1616) was a Dutch Mannerist painter, active in Elizabethan London from 1573 to 1581, and in Amsterdam from 1581 to the early 17th century, now known essentially as a portrait-painter, though he was also a poet and orator, and from 1595 began to sculpt as well.

Cornelis is a Dutch form of the male given name Cornelius. Some common shortened versions of Cornelis in Dutch are Cees, Cor, Corné, Corneel, Crelis, Kees , Neel and Nelis.

Cornelis Dirk (Cees) Andriesse (Leeuwarden, 21 December 1939) is a Dutch physicist, writer and historian of science. Internationally he is best known for his scientific biography of Christiaan Huygens.

Cornelis Ouwehand (1920–1996) was a Dutch anthropologist and a scholar of Japanese folklore. He is considered the founder of Japanese Studies in Switzerland.

Johannes Cornelis Wienecke (Heiligenstadt, 24 March 1872 - Apeldoorn, 11 August 1945) was a Dutch medallist. He designed the 4th portrait of queen Wilhelmina used on Dutch coins between 1922 and 1945. He worked many years in Zeist. In 1922 he also designed the logo of the Permanent Court of International Justice, which continues to be used today by the International Court of Justice.

Cornelis Bontekoe (1640/1647 in Alkmaar – 13 January 1685 in Berlin ), whose real name was Cornelis Dekker, was a Dutch physician known also as a popular essayist, particularly on tea, and editor of the works of Arnold Geulincx. He applied what were generally Cartesian theories in medicine, but with innovations such as a purely hydraulic and muscular explanation of the mechanism of the heart.

Cornelis Galle the Elder (1576 – 29 March 1650), a younger son of Philip Galle, was born at Antwerp in 1576, and was taught engraving by his father. He followed the example of his brother Theodoor in visiting Rome, where he resided for several years and acquired a correctness of design and a freedom of execution in which he greatly surpassed both his father and his brother. After engraving several plates at Rome, he returned to Antwerp, where he carried on the business of a printseller and engraved many plates after the works of his countrymen and his own designs. He became a master of the Antwerp Guild of St Luke in 1610. One of his pupils was Giovanni Florimi of Siena.

Cornelio Schut or Cornelis Schut III (alternative names: Cornelis Escut III, Cornelis Scut III, Cornelio Schut el Mozo, Cornelio Schut el joven) (c. 1629 – 1685) was a Flemish painter who was active in Seville, Spain during his entire career. He was one of the leading Flemish painters working at that time in Seville and he was very close in style to Murillo.

Cornélis DeWitt Willcox (1861–1938) was an American army officer and scholar, born at Geneva, Switzerland. He graduated from the University of Georgia in 1880, from the United States Military Academy (1885), and Artillery School (1892), and in 1913 studied at the University of Grenoble.

This article presents the Swedish discography of Cornelis Vreeswijk, Dutch-Swedish composer, singer, and guitar player.