Dudley Colley (ca. 1621 – July 1674)^[1] was an Irish Member of Parliament.

He was the son of Sir Henry Colley (ca. 1585-1637) and Anne Peyton, daughter of Sir Christopher Peyton. The Colley or Cowley family had come to Ireland from Rutland about 1500 and produced a line of Crown servants and soldiers. Dudley's great-grandfather Sir Henry Colley acquired Carbury Castle in 1554. Dudley's father acquired substantial lands in County Wexford.^{[citation needed]}

He represented Philipstown^[1] in the Irish House of Commons during the Parliament of Charles II.^{[citation needed]}

By his marriage to Anne Warren he was father of Henry Colley^[1] and grandfather of Henry Colley, Garret Wesley, and Richard Wesley, 1st Baron Mornington, all of whom also sat in the Irish House of Commons.^{[citation needed]}

He was the great-great-grandfather of Arthur Wellesley, 1st Duke of Wellington.^[2]