Samuel William Manthey (1774 – 4 August 1815) was a Norwegian jurist and politician.
He was elected to the first session of the Parliament of Norway in 1814, representing the constituency of Smaalenenes Amt. He was a district stipendiary magistrate and stipendiary magistrate by profession.[1]
Together with Elisabeth Antonette de Stockfleth (1777–1857) he had the son August Christian Manthey (1811–1880), a notable politician and writer, who married a daughter of . Samuel William Manthey was also the son-in-law of Thomas Rosing de Stockfleth.[2] [3] Another son, Ludvig Johan Carl Manthey (1809–1875), married another daughter of Jacob Nielsen. They had the daughter Bertha Manthey (1867–1947), who married Christian Lous Lange,[3] and mothered Halvard, Carl Viggo and August Lange.