Peter Gijsbert van Anrooij (13 October 1879 – 31 December 1954) was a Dutch composer and conductor of classical music.

The family soon moved to Utrecht, where van Anrooy learned piano, violin and composition in a music school (1890–1899).

While his early work mostly focused on classics such as Bach, Mozart, Beethoven, Debussy, Ravel, Mahler and Strauss, he later paid more attention to modern Dutch composers.

His most known composition is Piet Hein Rhapsodie voor symfonieorkest, which was based on the Dutch song De Zilvervloot (Spanish treasure fleet) by J.J. Viotta and J.P. Heije.

After World War II, between 1947 and 1954 he broadcast a weekly educational radio program at AVRO on understanding classical music.