Keith James Devlin (born 16 March 1947) is a British mathematician and popular science writer.

[3][5] Later he got a position as a scientific assistant in mathematics at the University of Oslo, Norway, from August till December 1972.

[3] He is a commentator on National Public Radio's Weekend Edition Saturday, where he is known as "The Math Guy.

"[6] His current research is mainly focused on the use of different media to teach mathematics to different audiences.

He is also co-founder and president of the company BrainQuake, which creates mathematics learning video games, which he set up in 2011.