Joanna Marsh (born 1970) is a British composer of choral and orchestral works, who has lived in Dubai since 2007.

She was a student at the Royal Academy of Music between 1998 and 1999; Organ Scholar at Sidney Sussex College, Cambridge, between 1989 and 1992; and the School Organist at Christ's Hospital between 1997 and 2000.

Marsh's life in the Middle East offered many musical opportunities including writing an orchestral work to celebrate the building of the Burj Khalifa, a commission for the BBC Symphony Orchestra for the first BBC Proms in Dubai in 2017, and a fanfare for the Queen's visit to Abu Dhabi in 2010 and musical arrangements for the Pope's first visit to the Middle East in 2019.

Her first opera was inspired by Dubai life: My Beautiful Camel, written with librettist David Pountney, and as yet it has not been given its premiere.

Marsh is a co-founder of ChoirFest Middle East in Dubai, an annual celebration of the region's choral music scene which reached its eighth edition in March 2020.