Jaume Ferran i Clua (Corbera d'Ebre, 1851 – Barcelona 1929) was a Spanish bacteriologist and sanitarian , contemporary of Koch, and said by his fellows to have made some of the discoveries attributed to Koch.
As early as 1885, he wrote on immunization against cholera.
Some of his ideas on the transmission and virulence of tuberculosis are revolutionary.
He died in 1929 and was buried in Montjuïc Cemetery, Barcelona.