Mark Ovenden is a British author and illustrator, best known for his books on public transport. He has written and illustrated several books on the subject, including Metro Maps of the World, Transit Maps of the World, and The World's Greatest Railway Journeys. He has also written books on the history of the London Underground and the Paris Metro. Ovenden is a passionate advocate for public transport, and has been a consultant for several cities around the world. He is a Fellow of the Royal Geographical Society and a member of the Chartered Institute of Logistics and Transport. He has been featured in numerous publications, including The Guardian, The Times, and The Economist.