Mahabalage Don Henry Jayawardena (29 March 1915 – 29 September 1986) was a Sri Lankan lawyer, businessman and politician.
Traveling to the United Kingdom, he qualified as a barrister and returned to Ceylon in 1946 and started his legal practice.
He contested the Kottawa electorate in the July 1960 parliamentary election, but lost to Robert Gunawardena.
He again contested from Kottawa in the 1965 parliamentary election and won defeating Robert Gunawardena and was appointed Minister of Health.
He was re-elected in the 1977 parliamentary election and was appointed Minister of Plantation Industries serving till 1979.