Richard Southwell (died September 1688) was an Irish politician.
He was the only son of Sir Thomas Southwell, 1st Baronet and his wife Elizabeth Starkey, daughter of William Starkey. in 1661, Southwell was elected to the Irish House of Commons for Askeaton in County Limerick, representing the borough until 1666.
He married Lady Elizabeth O'Brien, daughter of Murrough O'Brien, 1st Earl of Inchiquin. They had five sons and two daughters. Having predeceased his father, Southwell's oldest son Thomas succeeded his grandfather as baronet and was later elevated to the Peerage of Ireland as Baron Southwell. His third son William and his fifth son Richard sat both in the Parliament of Ireland.