History:
* The History of England (5 volumes) - his most famous work, a sweeping account of English history
* Danton: A Study
* Robespierre
* The French Revolution
* The House of Commons and Monarchy
Biography:
* The Life of Charles the First
* The Life of Napoleon
* The Life of Wellington
Poetry:
* The Bad Child's Book of Beasts
* More Beasts for Worse Children
* Cautionary Tales - a collection of humorous and often macabre poems about children who misbehave
* The South Country
* The Path to Rome
Fiction:
* The Man Who Lost Himself
* The Cruise of the 'Nona'
* Mr. Clutterbuck's Election
* The Missing Millions
Travel:
* The Path to Rome - a travelogue about his journey on foot from Toulous to Rome
* The Pyrenees
* The Four Men
Other:
* The Servile State - a political treatise arguing for a return to a traditional social order
* The Eye of the Needle - a collection of essays
* The Jews - a controversial book on the Jewish people
This list is not exhaustive, but it gives a good overview of the wide range of Hilaire Belloc's writing. He was a controversial figure, known for his strong opinions and his conservative political views. However, he was also a talented writer who produced many works that are still enjoyed today.