Knutzen, Martin, a German writer and philosopher of the Leibnitz-Wolfian school, was born in Konigsberg. Prussia, in 1713, and held a professorship of philosophy in the university of his native place. He died there in 1751. His most important work is Von der immateriellen Natur d. Seele (Frankfort, 1744, 8vo). See Krug, Philosoph. Worterb. ii, 627.