Sir William Grey KCSI (1818 – 15 May 1878) was an English administrator who worked with the East India Company in India and served as lieutenant-governor of Bengal from 1867 when he succeeded Sir Cecil Beadon and later as governor of Jamaica.

Nominated to work in the Bengal civil service he entered Haileybury College in January 1839 and passed out in July 1840.

He went to Bengal in 1840 and worked for a while in various offices before becoming a private secretary to Sir Herbert Maddock in 1845.

[1] As an administrator, he opposed excessive centralization and helped decentralise the postal department.

He was made Knight Commander of The Most Exalted Order of the Star of India in the 1870 Birthday Honours.