The Hon David Robertson Williamson, Lord Balgray (1761[1]–1837) was an 18th-century Scottish lawyer who rose to be a Senator of the College of Justice.
He owned the estate of Balgray, just north of Lockerbie in south-west Scotland.
In 1811 he replaced Alexander Fraser Tytler, Lord Woodhouselee as a Senator of the College of Justice.
[3] He married a cousin, Miss Robertson of Lawers.
His nephew was also called David Robertson Williamson (1830-1919).