James Henry Robert Innes-Ker, 6th Duke of Roxburghe, KT (12 July 1816 – 23 April 1879) was a Scottish peer.
Innes-Ker was the only surviving child of the 5th Duke of Roxburghe and was educated at Eton and Christ Church, Oxford. He inherited his father's titles in 1823 and on 29 December 1836, he married Susanna Stephania Dalbiac, the only child of Sir Charles Dalbiac. They had four children:
| Honorary titles | ||
|---|---|---|
| Preceded by David Robertson |
Lord Lieutenant of Berwickshire 1873–1879 |
Succeeded by Lord Dunglass |
| Peerage of Scotland | ||
| Preceded by James Innes-Ker |
Duke of Roxburghe 1823–1879 |
Succeeded by James Innes-Ker |
| Peerage of the United Kingdom | ||
| New creation | Earl Innes 1837–1879 |
Succeeded by James Innes-Ker |