Peter Hugh Marshall FRGS (born 23 August 1946) is an English author of over a dozen works of philosophy, history, biography, travel writing, and poetry.

During his studies, Marshall taught English for a year in Dakar, Senegal, served two years in the British Merchant Navy, and was a University of London tutor in philosophy and literature, which he continued after receiving his doctorate.

He considers these two his most important and influential works, though his personal favorite is Riding the Wind, which asserts his spiritual philosophy of "liberation ecology".

Marshall has written for The Observer, The Guardian, The Independent, New Statesman, and the Times Literary Supplement.

[1] Resurgence magazine named Marshall's Nature's Web among their most essential books of the late 20th century.