List of Famous people with last name Caithness

William Sinclair, 10th Earl of Caithness, was a Scottish nobleman and chief of the Clan Sinclair, a Highland Scottish clan in Caithness.

Malcolm Ian Sinclair, 20th Earl of Caithness,, is a Scottish Conservative politician and member of the House of Lords as one of the remaining hereditary peers. He is also 20th Lord Berriedale, 15th Baronet Sinclair, of Canisbay, Co. Caithness, Nova Scotia, and chief of Clan Sinclair. He is the Chief Executive of the Clan Sinclair Trust.

Alexander Sinclair, 9th Earl of Caithness was a Scottish nobleman and chief of the Clan Sinclair, a Highland Scottish clan in Caithness.

George Philips Alexander Sinclair, 15th Earl of Caithness, was a Scottish aristocrat.

George Sinclair, previously of Keiss, died 1698, was a Scottish nobleman, 7th Earl of Caithness and chief of the Clan Sinclair, a Scottish clan of the Scottish Highlands.