Frederick Dundas (14 June 1802 – 26 October 1872) was a British politician.
His mother was Lady Caroline, daughter of Aubrey Beauclerk, 5th Duke of St Albans.
Dundas was returned to Parliament for Orkney and Shetland in 1837, a seat he held until 1847 and again between 1852 and 1872.
Dundas married Grace, daughter of Sir Ralph Gore, 7th Baronet, on 2 June 1847.
Dundas survived her by four years and died on 26 October 1872, aged 70.