Lieutenant General William Frederick Scarlett, 3rd Baron Abinger CB, DL (30 August 1826 – 16 January 1892), was a British peer and soldier.

He served in the Crimean War fighting between 1854 and 1855 in the battles of Alma, Balaclava and Inkerman.

[1] In the 1877 Birthday Honours, Lord Abinger was appointed to the Order of the Bath as a Companion (CB).

They had one son, James and two daughters, Ella, who studied medicine at London School of Medicine for Women and the Royal Free Hospital and became the first female doctor in the state of Bloemfontein, South Africa,[4] and Evelina, an activist for women's suffrage and an aid worker during World War I, who married Major Henry Haverfield.

His son, Lieutenant-Colonel William James Scarlett, then built the mansion house of Achamore there.