Timothy Caswall (c.1733–1802) was a British Army officer and politician who sat in the House of Commons between 1761 and 1789.
He joined the army in the 2nd Foot Guards (Coldstreams) and was Ensign in 1750 and lieutenant and captain in 1756.
After being taken prisoner, he was held at St Malo languishing in great pain for four months.
In the 1761 general election he was returned unopposed as Member of Parliament for Hertford on the interest of Nathaniel Brassey, his uncle.
He continued to seek a salaried government post, but having sold his commission in the army in 1762, he disqualified himself in the King’s opinion.