The Chi-Rho (☧) is a Christian symbol formed by superimposing the first two Greek letters of the word Christos—Chi (Χ) and Rho (Ρ)—to create a monogram representing Jesus Christ. It is also known as a Christogram. The symbol originated in the early Christian era as a discreet way for believers to identify their faith during times of persecution, before Christianity was legalized in the Roman Empire.
The Chi-Rho gained widespread significance after Emperor Constantine the Great reportedly saw a vision of it in the sky before the Battle of the Milvian Bridge in 312 AD, accompanied by the words “In hoc signo vinces” (“In this sign, you will conquer”). Constantine adopted the symbol on his army’s shields and standards (the Labarum), and after his victory, he issued the Edict of Milan in 313 AD, legalizing Christianity. This event marked a turning point, transforming the Chi-Rho from a secret symbol into a powerful emblem of Christian triumph and divine favor.
The Chi-Rho affirms Jesus as the Anointed One (Christ), the Messiah, and King of Kings. It symbolizes Christ’s victory over sin, death, and evil, and serves as a declaration of faith in His divinity and redemptive work. It is often found in Christian art, liturgy, and iconography—including illuminated manuscripts like the Book of Kells, church architecture, vestments, and modern Christian jewelry and branding—where it continues to represent identity, hope, and spiritual victory.
