Cyril Chapman Longden, KPM, (1873–1913) was the sixth British colonial Inspector-General of Police in Ceylon (Sri Lanka).
Longden was born on 1 November 1873, the fourth child and second son of Sir James Robert Longden (1827–1891) and Alice Emily née Berridge (1846–1910).
[1] In 1905 the position of Inspector-General of Police and Prisons in Ceylon, was separated into two posts with the incumbent Major Albert Walter De Wilton continuing in the Prisons role and Longden, on loan from India, appointed as Inspector General of Police of Ceylon.
[2] Longden was instrumental in establishing a Police Training School for new recruits and a Criminal Investigation Department.
In 1910 Ivor Edward David was appointed as Inspector General of Police and Longden returned to his position in Madras.