Minister for the Post Office

• James J. Walsh 1922-1924

Minister for Posts & Telegraphs

• James J. Walsh 1924-1927
• Ernest Blythe 1927-1932
• Joseph Connolly 1932-1933
• Gerald Boland 1933-1936
• Oscar Traynor 1936-1939
• Tomás Ó Deird 1939
• Patrick Little 1939-1948
• James Everett 1948-1951
• Erskine Childers 1951-1954
• Michael Keyes 1954-1957
• Neil Blaney 1957
• John Ormonde 1957-1959
• Michael Hilliard 1959-1965
• Joseph Brennan 1965-1966
• Erskine Childers 1966-1969
• Patrick Lalor 1969-1970
• Gerard Collins 1970-1973
• Conor Cruise O'Brien 1973-1977
• Pádraig Faulkner 1977-1979
• Albert Reynolds 1979-1981
• Patrick Cooney 1981-1982
• John P. Wilson 1982
• Jim Mitchell 1982-1984

Minister for Communications

• Jim Mitchell 1984-1987
• Ray Burke 1987-1991

In 1984 the delivery functions were passed to:

• An Post (The Post Office)
• Telecom Éireann (The Irish Telecommunications Board)

In 1991 the regulatory functions were passed to:

• Minister for Tourism, Transport & Communications