Protestants in Japan constitute a religious minority of about 0.4% of total population or 509,668 people in number (see Protestantism by country).
All major traditional Protestant denominations are present in the country, including Baptists, the International Church of the Foursquare Gospel, Pentecostals, the Seventh-day Adventist Church, Lutherans, Anglicanism,Methodists, the Presbyterian Church,Mennonites, the Salvation Army and some others.
In 1859 the first representatives of the Anglican Communion, the Rev., later Bishop, Channing Moore Williams and the Rev. John Liggins of the Episcopal Church in the United States of America arrived in Nagasaki, Japan. Williams and Liggins were followed to Nagasaki in January 1869 by Rev. George Ensor, representing the Church Missionary Society (CMS), which followed the Anglican traditions of the Church of England. In 1874 he was replaced by the Revd H Burnside at Nagasaki. The same year the CMS mission was expanded to include Revd C F Warren at Osaka, Revd Philip Fyson at Yokohama, Revd J Piper at Tokyo (Yedo), Revd H Evington at Niigata and Revd W Dening at Hokkaido. Revd H Maundrell joined the Japan mission in 1875 and served at Nagasaki. Revd John Batchelor was a missionary to the Ainu people of Hokkaido from 1877 to 1941. Hannah Riddell arrived in Kumamoto, Kyūshū in 1891. She worked to establish the Kaishun Hospital (known in English as the Kumamoto Hospital of the Resurrection of Hope) for the treatment of leprosy, with the hospital opening on 12 November 1895. Hannah Riddell left the CMS in 1900 to run the hospital.