Sophia Marsham, Countess of Romney

Sophia Marsham, Countess of Romney (died 9 September 1812), formerly Sophia Pitt, was the first wife of Charles Marsham, 2nd Earl of Romney.

She was the only daughter of William Morton Pitt, MP (a relation of William Pitt the Elder, and his first wife, the former Margaret Gambier. She married the future earl on 9 September 1806 just over a week after the birth of her youngest child, Charlotte. However, it was not until 1832 that the earl re-married, his second wife being the Hon. Mary Elizabeth Townshend, daughter of John Townshend, 2nd Viscount Sydney and widow of George James Cholmondeley.

Lord Romney died in March 1845, aged 67, and was succeeded by his only son from his first marriage, Charles.

His second daughter, Lady Frances Marsham (1809–1901) married, in 1838, Major-General E. C. Fletcher (died 1877).