Raynaud or Reynaud is a surname. Notable people with the surname include:
Cecile Reynaud, volleyball playerCharles-Émile Reynaud (1844–1918), animator and inventorCharles Ceccaldi-Raynaud (born 1925), French politicianDarius Reynaud (born 1985), American football playerFernand Raynaud (1926–1973), stand-up comicJean Reynaud (1806–1863), philosopherJordy Mont-Reynaud (born 1983), chess masterJoëlle Ceccaldi-Raynaud (born 1951), politicianLouis Raynaud, dit Blanchard (1789–1868), politicianMarie-Line Reynaud (born 1954), politicianMaurice Raynaud (1834–1881), doctorMichel Raynaud, (born 1938), mathematicianPaul Reynaud (1878–1966), politicianRaynald of Châtillon (1125–1187), knightRegnaud de La Porte (Raynaud) (died 1325), bishop and CardinalRomain Reynaud (born 1983), Association football playerSerge Raynaud de la Ferriere (1916–1962), philosopherStéphane Reynaud, chef and cookery writerThéophile Raynaud (1583–1663), theologianYelda Reynaud (born 1972), actress