Magnus Julius De la Gardie (14 April 1668[1] – 28 April 1741), son of Axel Julius De la Gardie, was a Swedish general and statesman, member of the Swedish Hats Party.

After the dramatic death of King Charles XII in 1718, Magnus Julius De la Gardie became a member of the Privy Council of Sweden.

The newly appointed Privy Councillor commissioned architect Joseph Gabriel Destain to design Tullgarn Palace.

Magnus Julius De la Gardie was a vocal friend of the French kingdom.

Inspired by French customs, he arranged political salons, a novelty never heard of in Sweden at the beginning of the 18th century.