Catherine Roseanne "Cathy" Dennis (born 25 March 1969) is a British singer-songwriter, record producer and actress. After a moderately successful international solo career, Dennis later received great success as a writer of pop songs, scoring eight UK number ones and winning five Ivor Novello Awards.
In 2004, Dennis was listed 66th in the Q Magazine list of the top 100 most influential people in music and in 2006 she won the UK music industry's Woman of the Year Award.