2nd Seanad (1938) • 3rd Seanad (1938–1943) • 4th Seanad (1943–1944) • 5th Seanad (1944–1948) • 6th Seanad (1948–1951) • 7th Seanad (1951–1954) • 8th Seanad (1954–1957) • 9th Seanad (1957–1961) • 10th Seanad (1961–1965) • 11th Seanad (1965–1969) • 12th Seanad (1969–1973) • 13th Seanad (1973–1977) • 14th Seanad (1977–1981) • 15th Seanad (1981–1982) • 16th Seanad (1982–1983) • 17th Seanad (1983–1997) • 18th Seanad (1987–1998) • 19th Seanad (1989–1993) • 20th Seanad (1993–1997) • 21st Seanad (1997–2002) • 22nd Seanad (2002–2007) • 23rd Seanad (2007— )