Marcus Edwy Wettenhall (26 January 1876 – 25 January 1951) was an Australian politician. Born at to grazier Holford Wettenhall (a former Legislative Council member) and Mary Burgess Dennis, he attended local state schools before attending Toorak College and Geelong College, becoming an orchardist, wheat farmer and grazier. On 27 January 1903 he married Leila Ashton Warner at Hobart, Tasmania; they had five children. He farmed at Carrs Plains from 1908 to 1923 and then moved to Melbourne. Wettenhall held various community positions, including president of the Victorian Fruit Growers Central Association (1902), president of the Australian Fruit Growers federal conference (1902), member of the Federal Council of Woolgrowers (1926–35), chairman of the council of Agricultural Education (1938–3