World Mission Sunday 2026

Pope Leo XIV has chosen the theme "One in Christ, united in mission" for the 100th World Mission Day in 2026. In a message for the centenary of the celebration established by Pius XI, the Pope encourages the Church to continue its missionary work with joy and zeal following the Jubilee Year.

The Pope stated that this missionary journey requires reconciled communities and a willingness from everyone to cooperate with trust and generosity. He noted that the mystery of union with Christ is central to mission, drawing on the desire expressed by Jesus for his disciples to be one. The message calls for believers to renew their missionary vocation and advance together in evangelization during what he described as a new missionary age in Church history.