Henri Barbusse was a French novelist and a member of the French Communist Party. He was a lifelong friend of Albert Einstein.

Henri-Louis Bergson was a French philosopher, who was influential in the tradition of analytic philosophy and continental philosophy, especially during the first half of the 20th century until the Second World War, but also after 1966 when Gilles Deleuze published Le Bergsonisme. Bergson is known for his arguments that processes of immediate experience and intuition are more significant than abstract rationalism and science for understanding reality.

Marie François Xavier Henry Bouchot was a French art historian and conservator.

Louis-Henri Murger, also known as Henri Murger and Henry Murger, was a French novelist and poet.

Henri Pirenne was a Belgian historian. A medievalist of Walloon descent, he wrote a multivolume history of Belgium in French and became a prominent public intellectual. Pirenne made a lasting contribution to the study of cities that was a controversial interpretation of the end of Roman civilization and the rebirth of medieval urban culture. He also became prominent in the nonviolent resistance to the Germans who occupied Belgium in World War I.

Jules Henri Poincaré was a French mathematician, theoretical physicist, engineer, and philosopher of science. He is often described as a polymath, and in mathematics as "The Last Universalist", since he excelled in all fields of the discipline as it existed during his lifetime.

Henrietta Christian Wright (1852–1899) was an American children's author who resided in the Old Bridge section of East Brunswick, New Jersey. She was born there on February 18, 1852, died there on December 13, 1899, and buried in the Chestnut Hill Cemetery.

Henri Frédéric Amiel was a Swiss moral philosopher, poet, and critic.

Henrik Johan Ibsen was a Norwegian playwright and theatre director. As one of the founders of modernism in theatre, Ibsen is often referred to as "the father of realism" and one of the most influential playwrights of his time. His major works include Brand, Peer Gynt, An Enemy of the People, Emperor and Galilean, A Doll's House, Hedda Gabler, Ghosts, The Wild Duck, When We Dead Awaken, Rosmersholm, and The Master Builder. Ibsen is the most frequently performed dramatist in the world after Shakespeare, and A Doll's House was the world's most performed play in 2006.

Henry Abbey was an American poet who is best remembered for the poem, "What do we plant when we plant a tree?" He is also known for "The Bedouin's Rebuke".