Magnus Magnusson, was an Icelandic-born British-based journalist, translator, writer and television presenter. Born in Reykjavík, he lived in Scotland for almost all his life, although he never took British citizenship. He came to prominence as a BBC television journalist and was the presenter of the BBC television quiz programme Mastermind for 25 years.

Mastermind is a British television quiz show for the BBC, currently presented by Clive Myrie. Its creator, Bill Wright, drew inspiration from his experiences of being interrogated by the Gestapo during World War II. The show features an intimidating setting and challenging questions. Four contestants face two rounds, one on a specialised subject of the contestant's choice, the other a general knowledge round.