Alexander Bellos (born 1969)^[1] is a British writer, broadcaster and mathematics communicator.^[3][4][5][6] He is the author of books about Brazil and mathematics, as well as having a column in The Guardian newspaper.^[2][7]

Alex Bellos was born in Oxford and grew up in Edinburgh and Southampton. He was educated at Hampton Park Comprehensive School and Richard Taunton Sixth Form College in Southampton.^[1] He went on to study mathematics and philosophy at Corpus Christi College, Oxford,^[1] where he was the editor of the student paper Cherwell.^{[citation needed]}

Bellos's first job was working for The Argus^[1] in Brighton before moving to The Guardian in London.^[when?] From 1998 to 2003 he was South America correspondent of The Guardian,^[8][2] and wrote Futebol: the Brazilian Way of Life.^[9] The book was well received in the UK, where it was nominated for sports book of the year at the British Book Awards. In the US, it was included as one of Publishers Weekly's books of the year. They wrote: “Compelling...Alternately funny and dark...Bellos offers a cast of characters as colorful as a Carnival parade”. In 2006, he ghostwrote Pelé: The Autobiography, about the soccer player Pelé, which was a number one best-seller in the UK.^[10][11]

Returning to live in the UK, Bellos decided to write about mathematics. The book Alex's Adventures in Numberland was published in 2010 and spent four months in The Sunday Times' top ten best-sellers' list. The Daily Telegraph described the book as a "mathematical wonder that will leave you hooked on numbers." The book was shortlisted for three awards in the UK, including the BBC Samuel Johnson Prize for Non-Fiction 2010.^[12] The Guardian reported that Bellos's book was narrowly beaten into second place. Chairman of the judges Evan Davis broke with protocol to discuss their deliberations: "[Bellos's] was a book everyone thought would be nice if it won, because it would be good for people to read a maths book. Some of us wished we'd read it when we were 14 years old. If we'd taken the view that this is a book everyone ought to read, then it might have gone that way."^[13]

Several translations of the book have been published. The Italian version, Il meraviglioso mondo dei numeri, won both the €10,000 Galileo Prize for science books^[14][15][16] and the 2011 Peano Prize^[17] for mathematics books. In the United States, the book was given the title Here's Looking at Euclid.^[18]

Alex Through The Looking-Glass: How Life Reflects Numbers and Numbers Reflect Life was published in 2014 and received positive reviews. The Daily Telegraph wrote: “If anything, Looking Glass is a better work than Numberland – it feels more immediate, more relevant and more fun.” ^[19] Its US title was The Grapes of Math, about which The New York Times said Bellos was: “a charming and eloquent guide to math’s mysteries…There’s an interesting fact or mathematical obsessive on almost every page. And for its witty flourishes, it’s never shallow. Bellos doesn’t shrink from delving into equations, which should delight aficionados who relish those kinds of details.”

Bellos presented the BBC TV series Inside Out Brazil (2003),^[20] and also authored the documentary Et Dieu créa…le foot, about football in the Amazon rainforest, which was shown on the National Geographic Channel.^[21] His short films on the Amazon have appeared on BBC, More4 and Al Jazeera.^[4][22] He also appears frequently on the BBC talking about mathematics. His Radio 4 documentary Nirvana by Numbers was shortlisted for best radio programme in the 2014 Association of British Science Writers Awards.

Bellos appeared in the 2023 Christmas University Challenge series as team captain of Oxford's Corpus Christi team, reaching the final, only to be beaten by the Middlesex team.

Bellos lives in London^{[citation needed]} and is married with children.^[1] His father David Bellos^[1] is a translator and academic^[29] and his mother is Hungarian.^[30]