Harrowby

Harrowby may refer to:


 * Earl of Harrowby, in the County of Lincoln, is a title in the Peerage of the United Kingdom
 * Nathaniel Ryder, 1st Baron Harrowby (1735–1803)
 * Dudley Ryder, 1st Earl of Harrowby, PC, FSA (1762–1847)
 * Dudley Ryder, 2nd Earl of Harrowby KG, PC, FRS (1798–1882)
 * Dudley Ryder, 3rd Earl of Harrowby PC, DL, JP (1831–1900)
 * Henry Ryder, 4th Earl of Harrowby (1836–1900)
 * John Ryder, 5th Earl of Harrowby (1864–1956)
 * Dudley Ryder, 6th Earl of Harrowby (1892–1987)
 * Dudley Ryder, 7th Earl of Harrowby (1922–2007)
 * Dudley Ryder, 8th Earl of Harrowby (born 1951)
 * Harrowby Hall in Lincolnshire, England, was the family home of the Ryder family, the former home of Nathaniel Ryder
 * Harrowby, Lincolnshire, England, a hamlet