Gustave Magnel (Essen15 september 1889 – Ghent 5 July 1955) was a Belgian engineer and Professor at the (then) University of Ghent. In 1912 he obtained a degree in civil engineer and Assistant.

He is considered a pioneer in the experimental research of concrete and concrete mortars in Belgium, and was a specialist in reinforced concrete and prestressed concrete.

At the outbreak of the first world war he fled to London where he joined the D.G. Somerville & co. Contractor Company worked, first as engineer and from 1917 as Chief Engineer. After the war he returned to Ghent and was appointed in 1919 work leader and shortly afterwards to coach at the University of Ghent. In 1922 he started a free course Practice of calculation of reinforced concrete. In 1926 he founded the Magnel laboratory for concrete research to respond to the urgent need for concrete research, which in 1930 became part of Ghent University. In 1927 , he was appointed to Professor at the University of Ghent, in 1932 toAssociate Professor and full Professor in 1934 to.

In 1928 by the French engineer Eugène Freyssinet along with Jean Scailles of prestressed concrete obtained the patent .

In 1937 began to investigate further the Magnel prestressed concrete trial and error, which eventually led to the development of the system Blaton-Magnel for prestressed concrete.

For the University of Ghent, he did the concrete study for:

Magnel was a member of:

He was also President of the Rotary Club of Ghent and in that capacity he founded in 1936 the Association "the friends of the Saint Nicholas Cathedral in Ghent" on, that this church has saved from destruction by to promote the stabilization and restoration of the building.

Every five years since 1959 "Gustave Magnel gold medal" awarded to the designer (s) of an executed and completed construction work that can be considered as an important and remarkable application of reinforced and/or prestressed concrete.