Oskar Jensen is an author and academic. He researches songs at Newcastle University, and has written scholarly tomes on Napoleon, ballad-singing, and most recently the London streets, with 2022's Vagabonds.

He is a BBC New Generation Thinker, appearing frequently on Radios 3 and 4, as well as showing up in the New Statesman, on Who Do You Think You Are?, and as historical advisor for 2018's Vanity Fair and a forthcoming major motion picture. His debut adult novel, Helle and Death, was published in 2023.