Enrique Moles Ormella (26 August 1883 – 30 March 1953) was a Spanish pharmacist, physicist, and chemist, most notable for his work on atomic weights of the elements.

[2][n 1] Moles obtained the bachelor's degree from Colegio Iberico in Barcelona, and in 1900 he entered to study pharmacy at the Complutense University of Madrid.

At the time of the outbreak, Moles took over the leadership of the National Institute of Physics and Chemistry (Blas Cabrera Felipe had moved to Paris), and in 1937 Moles was appointed Director of Explosives at this institution, which was now used for military purposes by the Republican government.

In 1939 Moles fled to France where he signed the manifesto "Against the Fascist barbarity," published by El Socialista newspaper on the day after the aerial bombardment of Madrid.

[5] He was expelled from the University in January 1944, and joined the Instituto de Biología y Sueroterapia (IBYS) as technical advisor.