List of Famous people who died at 63

Joseph Gerard Polchinski Jr. was an American theoretical physicist and string theorist.

Milton H. Greene was an American fashion and celebrity photographer and film and television producer, best known for his photo shoots with Marilyn Monroe.

Giuseppe "Bepi" Colombo was an Italian scientist, mathematician and engineer at the University of Padua, Italy.

Henry Jay Lewis was an American double-bassist and orchestral conductor whose career extended over four decades. A child prodigy, he joined the Los Angeles Philharmonic at age 16, becoming the first African-American instrumentalist in a major symphony orchestra and, later, the first African-American symphony orchestra conductor in the United States. As musical director of the Seventh Army Symphony Orchestra, he supported America's cultural diplomacy initiatives in Europe after World War II.

Sir John Bertram Adams was an English accelerator physicist and administrator.

Per Carl Gustav Unckel was a Swedish Moderate Party politician who served as Minister for Education from 1991 to 1994 and as Governor of Stockholm County from 2007 until his death in 2011.