John Johnson (1807 – 28 December 1878) was an English architect who specialised in religious buildings and churches in the Gothic style. He was regularly employed by the civil engineer Sir John Kelk to design the homes and public buildings he funded. Johnson is best known for his collaboration with Alfred Meeson on designs for Alexandra Palace in north London; his designs for the Church of St Edward the Confessor in Romford, Essex; and for the Grade I listed St Mary's Church in Tidworth, Wiltshire, which was completed the year he died.