a German theologian, was born at Leipheim Aug. 22, 1691, and was educated at the University of Jena. By advice of the celebrated Orientalist and theologian Buddeus, in whom Kleinknecht found a warm friend, he accepted a position as teacher in the Orphanage of Halle, which he held until 1719. In 1725 he became pastor at Pfuhl, in 1731 at Leipheim, and died July 11, 1753. He was especially active in behalf of missions, and sought to interest the state authorities for them. For a list of his writings, see Doring, Gelehrte Theol. Deutschlands, ii, 115 sq.