Donal Joseph O'Sullivan (24 December 1893 – 15 April 1973) was an Irish academic, folk-music historian and politician.
[1] He was an independent member of Seanad Éireann from 1943 to 1944.
He was elected to the 4th Seanad in 1943 by the Cultural and Educational Panel.
[2] He lost his seat at the 1944 Seanad election.
[2] He was also a Clerk of the Seanad from 1922 to 1936.