James Simpson (British Army officer)

Sir James Simpson (1792 – 18 April 1868) was a general of the British Army.

He served with the 1st Regiment of Foot Guards during the Peninsular War and the Waterloo Campaign, and then commanded the 29th Regiment of Foot in Mauritius and Bengal.

In February 1855 he was sent out to the Crimea to act as chief of staff to the army commander Lord Raglan. Raglan died on 28 June, and Simpson reluctantly took command of the army. He resigned on 10 November, and was succeeded by Sir William Codrington.