Marcel Janco
 Marcel Janco (German: [maɐ̯ˈsɛl ˈjaŋko] French: [maʁsɛl ʒɑ̃ko] common rendition of the Romanian name Marcel Hermann Iancu pronounced [marˈt͡ʃel ˈherman ˈjaŋku] last name also Ianco Janko or Jancu; May 24 1895 – April 21 1984) was a Romanian and Israeli visual artist architect and art theorist. He was the co-inventor of Dadaism and a leading exponent of Constructivism in Eastern Europe. In the 1910s he co-edited with Ion Vinea and Tristan Tzara the Romanian art magazine Simbolul.