Hülsemann, Johann a German theologian, was born in Ostfriesland in 1602, and was educated at the universities of Wittenberg and Leipzig. In 1629 he was appointed professor of theology at the University of Wittenberg; he was also a member of the "Leipziger Convent" of 1630, and of the "Colloquium" at Thorn in 1645, where he performed the office of moderator theologorum Augustance confessionis. In 1646 he was called as professor of systematic theology to the University of Leipzig. He died in 1661. In connection with his son-in-law, Calovius (q.v.), he carried on the controversy against Calvinism as a strictly orthodox Lutheran. An able polemic and a thoroughly educated theologian, who in many respects may be compared to the scholastics of the 16th century, Hulsemann distinguished in his attacks against Calvinism (in his work Calvinismus irreconciliabilis, Witt. 1644, Lpz. 1646), incited by bishop Joseph Hall's Roma irreconciliabilis, the fundamental articles and the presuppositions from the possible inferences. His most celebrated work is Breviarum theolog. exhibens praecipuas fidei controversias (1640, and often), and in an enlarged form, Extensio breviarii theologici (1655, 1657). — Herzog, Real-Encyklop. 4, 304 sq.; Theol. Univ. Lex. 1, 372; Gass, Protest. Dogmat. 1, 318 sq.; 2, 38 sq.; Tholuck, Geist. d. luther. Theol. Wittenberg's, p. 164 sq.