List of Famous people who died at 68

Lieutenant-Colonel Sir Rhys Llewellyn, 2nd Baronet was a Welsh mining executive, soldier, author and dignitary.

Jean-Pierre Vasarely (1934–2002), professionally known as Yvaral, was a French artist working in the fields of op-art and kinetic art from 1954 onwards. He was the son of Victor Vasarely, who was a pioneer of op-art.

Dame Kathleen Lonsdale was an Irish pacifist, prison reformer and crystallographer. She proved, in 1929, that the benzene ring is flat by using X-ray diffraction methods to elucidate the structure of hexamethylbenzene. She was the first to use Fourier spectral methods while solving the structure of hexachlorobenzene in 1931. During her career she attained several firsts for female scientists, including being one of the first two women elected a Fellow of the Royal Society (FRS) in 1945, first woman tenured professor at University College London, first woman president of the International Union of Crystallography, and first woman president of the British Association for the Advancement of Science.

Jean-Claude Colliard was a French academic and senior public servant.