General William Frederick Forster KH (17 December 1798 – 8 June 1879) was a senior British Army officer who served as Military Secretary from 1860 to 1871.

Brought up in Berwick-upon-Tweed,[1] Forster was commissioned into the 85th Regiment of Foot in 1813.

[2] In 1830 he was appointed Groom of the Bedchamber for the Duke of Gloucester.

[4] He was appointed Deputy Adjutant-General in 1855,[5] and then Military Secretary in 1860,[6] retiring from that post in 1871.

[8] Forster was also Colonel of the 81st Regiment of Foot.