Philip (or Philippus) Julius van Zuylen van Nijevelt (Rotterdam, 5 Januari 1743 – Utrecht, 21 February 1826) was a Dutch general, baron and count. He was appointed Marshal of Holland in the Kingdom of Holland and served as French senator following the annexation of Holland by the Napoleonic Empire. Van Zuylen van Nijevelt was also an amateur scientist and became known for his treatise on chess.
Philip Julius van Zuylen van Nijevelt was a member of the prominent Rotterdam patrician (regenten) family of Van Zuylen van Nijevelt. His parents were Jacob van Zuylen van Nijevelt (1699–1753) and Aletta Johanna Timmers.
He studied mathematics and in 1767 joined the army as a volunteer ensign in the Regiment Karabiniers Oranje-Friesland (Orange-Frisia Regiment of Carabiniers). He rose quickly in the ranks, to captain of the cavalry (1768), major (1779), and finally lieutenant-colonel in the regiment of dragoons.
In 1795, he gained promotion to major general and was given responsibility for the organisation of the Dutch cavalry.
In 1796, a year after the Batavian Revolution, he was given command of the 2nd Brigade of the Batavian army, based in Arnhem. During the Anglo-Russian invasion of Holland in 1799, this brigade was part of the Batavan 1st Division under the command of Herman Willem Daendels. On 21 August 1799, he was injured in battle.
In 1804 Van Zuylen van Nijevelt was promoted to the rank of lieutenant general.
In the Kingdom of Holland, he was military governor in The Hague and military commander of the provinces of Holland and Utrecht. He served as Grand Chamberlain and Grand Master of Ceremonies at the court of King Louis Bonaparte, and also served as president of the Hoge Raad van Adel (High Council of Nobility) and as governor of the military schools.