That link to the Nobel Prizes that I posted earlier lists them all by nationality, and the French have 11 physics prizes, 7 chemistry, and 8 physiology or medicine. Most of them were early prizes, and they are long dead--only five of them were awarded in the past thirty years, but they are still alive: Pierre-Gilles de Gennes, Georges Charpak, Claude Cohen-Tannoudji, Jean-Marie Lehn, Jean Dausset. Louis Néel, who shared the physics prize with Alfvén in 1970, died in 2000. François Jacob seems to still be alive, he shared the physiology or medicine prize with André Lwoff, who died in 1994--every other Frence science prize winner seems to have died more than fifteen years ago.