Thomas John Newbold (8 February 1807 – 29 May 1850) was an English soldier in the service of the East India Company, known as a traveller and orientalist.
While in command of the port at Lingy, he detained a boat supplying a belligerent, in a conflict in relation to which government of Malacca desired to maintain a strict neutrality.
On his prosecution by the owner, the legality of the seizure could not be maintained; but Newbold's conduct was approved by the court, and he was reimbursed his expenses.
Arriving at the presidency with a detachment of his corps in August 1835, he was approved aide-de-camp to Brigadier-general E. W. Wilson, C.B., commanding the ceded districts, an appointment which he held until 1840.
[1] Newbold left India on leave of absence early in 1840, and visited Jebel Nákas ("Bell Mountain"), a tourist attraction in the Sinai peninsula in June of that year.
During his residence of three years in the Straits of Malacca, where he had constant contact with the Malayan peninsula, he accumulated material for papers contributed to the journals of the Asiatic societies of Bengal and Madras.