David Erskine, 9th Earl of Buchan, 4th Lord Cardross, was a Scottish peer. He was the son of Henry Erskine, 3rd Lord Cardross, by Catherine, daughter of Sir James Stewart of Kirkhill. He was styled Master of Cardross and then Lord Cardross until 1695 whereupon he claimed Earldom of Buchan.
- Occupation
- politician
- Position held
- member of the House of Lords
- Born
- 1672
- Died
- 1745