Catholics and Baptists are both Christians who affirm Jesus Christ and the authority of the Bible, but they differ substantially in church authority, baptism, the Lord’s Supper, sacraments, ministry, and the role of tradition. Baptist churches are also diverse, so no comparison applies identically to every Baptist body.
Authority
Catholic teaching understands Scripture and apostolic Tradition as interpreted within the teaching authority of the Church, especially the bishops in communion with the pope.
Baptists generally emphasize the supreme authority of Scripture and the responsibility of local congregations and believers to read it faithfully.
Baptism
Catholics baptize infants as well as older converts and understand baptism as a sacrament of Christian initiation that truly communicates grace.
Baptists normally practice believer’s baptism after a personal profession of faith, usually by full immersion. They do not regard infant baptism as valid Christian baptism.
Communion and sacraments
Catholics celebrate seven sacraments and teach the real presence of Christ in the Eucharist through transubstantiation.
Baptists usually recognize baptism and the Lord’s Supper as ordinances instituted by Christ. Understandings of Communion vary, but most Baptists reject the Catholic doctrine of transubstantiation.
Church structure and saints
Catholicism has a global episcopal structure with bishops and the pope. Baptist churches commonly emphasize congregational autonomy, though they may cooperate through conventions or associations.
Catholics venerate saints and ask for their intercession; Baptists normally pray directly to God and do not invoke saints.
Salvation
Both traditions teach that salvation comes through Jesus Christ, but they describe the relation of faith, grace, sacraments, perseverance, and works differently.
Shared Christian ground
Catholics and Baptists share central Christian convictions while belonging to distinct theological and ecclesial traditions. A fair comparison avoids treating all Baptists as identical.