Raymond Alexander Turpin, born 5 November 1895 in Pontoise, died May 24, 1988, in Paris, was a French pediatrician and geneticist.

Turpin was admitted to the Faculty of Medicine of Paris in 1914, and in 1915 he was mobilized as a military medical assistant.

Three years later, he was seriously affected by poison gas, and was subsequently awarded the Croix de Guerre.

As part of the Pasteur Institute, he participated, with Albert Calmette and Benjamin Weill-Hallé, in the first trials of the BCG vaccine, to prevent TB, and continued the collaboration until 1933.

He was elected president of the French Society of Pediatrics in 1960 and participated in the creation of the first chair of genetics in 1965 which was initially entrusted to Jérôme Lejeune.