Earl of Effingham, in the County of Surrey, is a title in the Peerage of the United Kingdom. Its United Kingdom version was created in 1837 for Kenneth Howard, 11th Baron Howard of Effingham, named after the village of Effingham where they held the manor.
This ennobled branch of the Howard family stems from the noted naval commander and politician Lord William Howard, senior son of Thomas Howard, 2nd Duke of Norfolk from his second marriage to Agnes Tylney. William served as Lord High Admiral, as Lord Chamberlain of the Household and as Lord Privy Seal. In 1554 he was created Baron Howard of Effingham in the Peerage of England as a reward for leading the defence of London against Wyatt's rebellion. His successor son was better known to history as Charles Howard, 1st Earl of Nottingham, after being granted that title in 1596. He was Lord High Admiral from 1585 to 1618 and served as commander-in-chief of the English fleet against the Spanish Armada in 1588. In 1603 his eldest son and heir apparent William Howard, Lord Howard of Effingham (1577–1615), was summoned to the House of Lords through a writ of acceleration in his father's junior title of Baron Howard of Effingham. He predeceased his father relatively young so is not considered to have succeeded as third Baron Howard of Effingham.