Janet Elizabeth Gordon-Lennox, Countess of March and Kinrara (born 1 December 1961) is the second wife of Charles, Earl of March and Kinrara.

She was born The Hon. Janet Elizabeth Astor, second daughter and third child of the William Astor, 3rd Viscount Astor (and his elder daughter by his third wife Bronwen Pugh). She was educated at New College, Oxford, where she graduated with a BA degree and at King's College London, where she received an MA in Theology & Religious Studies in 1991.
She married the Earl of March, son and heir apparent of the 10th Duke of Richmond, in 1991. They have three sons, including Charles Gordon-Lennox, Lord Settrington (born 20 December 1994); and one daughter. The youngest children, Frederick and Eloise, are twins, born in 2000. Lady March supports her husband in his entrepreneurial endeavours at their home, Goodwood House.

Titles

• The Honourable Janet Elizabeth Astor (1961–1991)

• Countess of March and Kinrara (1991–present)