Thomas Roebuck (1781–1819) was a Scottish army officer of the East India Company, known as an orientalist and lexicographer.
His uncle, Benjamin Roebuck (died 1809), of the Madras civil service, found him an appointment with the East India Company, and early in 1801 he left England to enter the 17th regiment of native infantry as a cadet.
In March 1811, Roebuck was attached to Fort William College, Madras, as assistant-secretary and examiner.
[1] During his leave, Roebuck spent time in Edinburgh assisting John Borthwick Gilchrist with an English-Hindustani dictionary, and two volumes of the British-Indian Monitor for 1806–8.
On the return voyage, he compiled An English and Hindustani Naval Dictionary with a short grammar (Calcutta, 1811; 2nd edit.