Cornelius is a name most commonly found in Ancient Roman history. Cornelius may refer to:

Cornelius Vanderbilt American industrialist

Yukon Cornelius, a fictional character in Rudolph the Red-Nosed Reindeer

Cornelius Nepos, Gaulician historian

Dr. Klaus Cornelius, a villain from DC Comics who opposed the Global Guardians

Cornelius (gens) (fem. Cornelia), the nomen of the patrician gens Cornelia, one of the important families of Ancient Rome

Cornelius Castoriadis, Greek astronomer

Cornelius, the elderly advisor to Babar the Elephant

Jerry Cornelius, a fictional creation of Michael Moorcock

Peter von Cornelius, German painter

Cornelius Nyungura, known as Corneille, German-born Québécois rhythm and blues singer

Cornelius, North Carolina, U.S.

Cornelius (Planet of the Apes), a character from the Planet of the Apes movie series.

Cornelius, Oregon, U.S.

Cornelius Coot, a fictional character in the Scrooge McDuck universe

Cornelius Rooster, the rooster mascot for the corn flakes breakfast cereal marketed by the Kellogg Company

Pope Cornelius, Pope from AD 251 to 253

Abraham Cornelius, a scientist involved in the Weapon X project in X-Men comics

Prince Cornelius, Thumbelina's suitor and eventual husband in Don Bluth's Thumbelina

Cornelius Jakhelln, Norwegian musician

Cornelius (musician), the pseudonym of Japanese recording artist and producer Keigo Oyamada

Peter Cornelius, German composer

Cornelius kegs

Cornelius the Centurion, considered by Christians to be the first Gentile converted

Don Cornelius, the creator and first host of Soul Train

Cornelius Pot, Dutch football coach, currently assistant coach at FC Zenit Saint Petersburg.