This is a list of things named after the Nobel Prize-winning American chemist Glenn T. Seaborg (1912–1999). Known for his considerable legacy, Seaborg was once listed in the Guinness Book of World Records for having the longest entry in Marquis Who's Who. His legacy was cemented with the naming of element 106 as seaborgium in his honor. He is the first of two individuals (the other being Yuri Oganessian) to have had an element named after them during their lifetime (the names einsteinium and fermium were proposed when Einstein and Fermi were alive, but were not approved until after their deaths).