Muriel Nissel (née Griffiths; 30 January 1921 – 2010) was a British statistician and civil servant. Together with Claus Moser, she created "a national survey analysing trends in social welfare", that was to become Social Trends, first published in 1970, and considered to be the "statistician's bible", before working on the "distribution and redistribution of wealth". Nissel also wrote well-regarded books, including People Count – a history of the General Register Office, and Married to the Amadeus: Life with a String Quartet.