Major-General William Wilby CB (c.1820 - 15 December 1893) was the General Officer Commanding, Ceylon.

Wilby was commissioned as an ensign in the British Army on 27 May 1836.

[1] He saw action in the Crimean War and commanded the right wing of his regiment at Gujarat and Sindh during the Indian Rebellion in 1857.

[1] He was present at the Battle of Aroghee and at the Battle of Magdala in April 1868 during the British Expedition to Abyssinia[1] and went on to be General Officer Commanding, Ceylon from 1879[2] to 1882.

[3] He afterwards served as colonel of the King's Own (Royal Lancaster Regiment) (1892–93).