Captain James Ogilvie-Grant, 11th Earl of Seafield, JP, DL (18 April 1876 – 12 November 1915), styled Viscount Reidhaven in 1888, was a Scottish peer and soldier.

[5] Seafield served as a lieutenant in the Canterbury Yeomanry Cavalry, New Zealand Forces.

[9][10] They had one daughter: Lord Seafield died on 12 November 1915, aged 39, from wounds received at Flanders in Belgium.

[12] Seafield was succeeded in the barony of Strathspey, the baronetcy of Colquhoun and as Chief of Clan Grant by his younger brother Hon.

The earldom and the other subsidiary Scottish peerage titles could be passed on to female heirs and, along with the vast estates, were inherited by his daughter.