The Kingdom of God Is Within You is a non-fiction book written by Leo Tolstoy. A Christian anarchist philosophical treatise, the book was first published in Germany in 1894 after being banned in his home country of Russia. It is the culmination of 30 years of Tolstoy's thinking and lays out a new organization for society based on an interpretation of Christianity focusing on universal love.

Count Lev Nikolayevich Tolstoy, usually referred to in English as Leo Tolstoy, was a Russian writer. He is regarded as one of the greatest and most influential authors of all time. He received nominations for the Nobel Prize in Literature every year from 1902 to 1906 and for the Nobel Peace Prize in 1901, 1902, and 1909.