Karl Winfrid Eikenberry (born 1951) is a retired United States Army Lieutenant General currently serving as the U.S. ambassador to Afghanistan.
Eikenberry graduated from Goldsboro High School in Goldsboro, North Carolina in 1969 and then attended West Point, where he was commissioned as a Second Lieutenant upon graduation in 1973.
He received an M.A. in East Asian Studies from Harvard, where he would later return as National Security Fellow at the John F. Kennedy School of Government, and an M.A. in political science from Stanford, where he was also a Ph.D candidate. In addition, Eikenberry has studied in Hong Kong at the UK Ministry of Defence Chinese Language School, earning the Foreign Office's Interpreter’s Certificate for Mandarin Chinese, and Nanjing University, earning an advanced degree in Chinese History.