Nelson Ikon Wu (9 June 1919 – 19 Mar 2002) was a Chinese and American writer and professor of Asian art history.

Born June 9, 1919, in Peking, Wu earned a bachelor's degree from the National Southwest Associated University in Kunming in 1942 and came to the United States in 1945. He attended the New School for Social Research in New York before earning a master's degree in 1949 and doctorate in 1954 in art history from Yale University.

Wu was a scholar of Asian art and architecture.^[2] He was the Edward Mallinckrodt Distinguished University Professor Emeritus of the History of Art and Chinese Culture in Arts & Sciences. He came to Washington University in 1965, becoming a key figure for the promotion of Asian art in St. Louis and, in 1971, a founder of the Asian Art Society. He was named professor emeritus in 1984. Wu was a best-selling author in China and Taiwan, occasionally using his pen name Lu Ch'iao (literally, Deer Bridge). In 1958 he published his first novel "Song Never to End" or "Never-ending Saga" (Wei yang ko or Weiyang ge), which focused on friendships among four young people during the Second Sino-Japanese War. It has sold more than one million copies^{[citation needed]} and in 1991 was voted most influential book of the 1950s by readers of the China Times, Taiwan's largest daily newspaper and ranked number 73 for 20th century Chinese novels.^[2][3] "Nelson was an extremely charismatic figure with a large following on campus and in St. Louis," said Mark S. Weil, Ph.D., the E. Desmond Lee Professor for Collaboration in the Arts and director the Gallery of Art. "Every year around Christmas, he would give a lecture celebrating Pan-Asian spirituality that filled Steinberg Auditorium."

While at Yale, Wu met Mu-lien Hsueh, a Wellesley College graduate also born in Beijing. The couple married in 1951. Biologist Ting Wu and actor Ping Wu are their children.

Wu taught at Yale, San Francisco State College and Kyoto University in Japan and Washington University in St. Louis. His honors include a Guggenheim Fellowship and a Fulbright Research Scholarship.

Dr. Wu died Tuesday, March 19, 2002, of cancer at the Beth Israel Deaconess Medical Center in Boston, Massachusetts. In that year, the Washington University East Asian Library established the Nelson I. Wu Memorial Book Fund. In 1998, Washington University and the Saint Louis Art Museum inaugurated the annual Nelson I. Wu Lecture on Asian Art and Culture.^[12] Lecturers have included (in order from 1998 to 2012) Richard Barnhart, Milo Beach, Nicole Coolidge Rousamaniere, Robert Mowry, Maxwell Hearn, Lothar von Falkenhausen, Timothy Clark, Lu Jie, Nancy Steinhardt, Jerome Silbergeld, and Andrew Watsky, Yukio Lippit, Jane Portal, Colin C. Mackenzie, and Vidya Dehejia.^[12] His home and bamboo grove in St. Louis which contains Nelson Wu's calligraphy of the Book of Changes (I Ching) handwritten covering the four walls of an entire room has been preserved.^[8]

The Washington University Libraries maintain Nelson Wu’s collection on East Asian art, architecture, and Chinese culture.

An album, title song and music video in 2013 are focused on his 1945 book, "Never-Ending Saga".^[13]