Sir Arthur Harold Marshall, KNZM, FRSNZ, FNZIA, FASA (born 15 September 1931) is an expert in acoustics design and research.
He is Professor Emeritus of the University of Auckland School of Architecture, and co-founder of Marshall Day Acoustics Ltd in 1981 with Chris Day. He currently resides in Auckland New Zealand, and continues work with Marshall Day Acoustics as a group consultant.
He is recognised internationally for his contribution to concert hall design, in particular his seminal work with Mike Barron on the importance of lateral reflections.
He has worked on several major concert hall projects including the Guangzhou Opera House with architect Zaha Hadid and the Philharmonie de Paris with French architect Jean Nouvel.Marshall was elected a Fellow of the Royal Society of New Zealand in 1994. He also holds Fellowships in the Acoustical Society of America and the New Zealand Institute of Architects.
In 1995 he was awarded the Wallace Clement Sabine Medal by the Acoustical Society of America for his contributions to the field of architectural acoustics, and design of concert halls.
In 2006 he received the Gold Medal of the Acoustical Foundation of India.
In 2008 he received the title of Knight of the New Zealand Order of Merit.
In 2013 he received the Pickering Medal from the Royal Society of New Zealand.
In 2015 he received the Rayleigh Medal from the Institute of Acoustics.