Sydney Northcote (1897–1968) was a British musician, writer, editor, composer, arranger, adjudicator and administrator.
Orr, and contributed articles to the 5th Edition of Grove's Dictionary of Music and Musicians (MacMillan, 1954).
As an editor he was responsible for The New Imperial Edition of Solo Songs (Boosey and Hawkes, 1949) and jointly with E.T.
Davies, Caneuon Cenedlaethol Cymru - National Songs of Wales (Boosey & Hawkes, 1959), contributing 43 of his own arrangements to this volume.
At the Trinidad Music Festival in 1950, he was impressed with the standard of performance of the young musicians whom he listened to, and dismayed at the lack of an adequate performance venue for them; together with Helen May Johnstone, President of the Trinidad Music Association, he began to lobby the British Government for improved facilities, and was influential in helping to raise funds for the project from the UK Carnegie Trust.