Iglesia Ni Cristo (INC), or the Church of Christ, is a Christian religious organization founded in the Philippines and formally registered on July 27, 1914, under the leadership of Brother Felix Y. Manalo. Its doctrines are drawn exclusively from the Bible, centering on worship of the one true God, faith in Jesus Christ as the Son of God and Savior of mankind, and adherence to His commandments and teachings as recorded in Scripture.

Since its first congregation was established in Punta, Sta. Ana, Manila, the Church has grown from a single local congregation into a global religious institution, now present in 168 countries and territories worldwide. This growth began under Felix Y. Manalo, who oversaw the Church's expansion across the Philippine archipelago until his passing in 1963, and continued under his successor, Brother Eraño G. Manalo, who led INC's international expansion, starting with congregations in Honolulu and San Francisco in 1968.

The Church is distinguished by its unity in doctrine and worship practices, a centralized and orderly administrative structure, and disciplined congregational life. Beyond its religious mission, INC engages in active humanitarian and community outreach through its charitable arm, the Felix Y. Manalo Foundation, which provides assistance to communities in need around the world.

Today, Iglesia Ni Cristo continues to operate as a worldwide Christian fellowship, maintaining consistent worship practices and community programs across its member congregations, guided by its founding principles of biblical fidelity and organizational unity.