Sylvester Douglas, 1st Baron Glenbervie, PC, KC, FRS, FRSE, FSA (24 May 1743 – 2 May 1823) was a British lawyer and politician.

[11] He was asked to accompany Earl Macartney to the Cape of Good Hope in 1796 and, after 18 months there, to succeed him as governor.

[14] He finally agreed in October 1800, again for an Irish peerage and was so appointed Governor of the Cape of Good Hope,[15] Douglas changed his mind again and accepted a post as Joint Paymaster of HM Forces, subsequently receiving £2731.

[17] After serving as joint Paymaster of the Forces between 1801 and 1803[18] and Vice-President of the Board of Trade between 1801 and 1804,[19] he was Surveyor General of Woods, Forests, Parks, and Chases between 1803 and 1806[20] and 1807 and 1810.

On the office of the Surveyor General of the Land Revenues of the Crown being combined with the former in 1810, became the First Commissioner of Woods and Forests, the head of the new department.