Cathaoirleach

The cathaoirleach is the chair of Seanad Éireann, the sixty-member upper house of the Oireachtas, the legislature of Ireland. The current cathaoirleach is Fianna Fáil senator Mark Daly, who has held the office since 12 February 2025.

Powers and functions

The cathaoirleach is the sole judge of order, and has a range of powers and functions, namely:

Calls on members to speak and all speeches must be addressed to the Chair.
Puts such questions to the House as are required, supervises Divisions and declares the results.
Has authority to suppress disorder, to enforce prompt obedience to Rulings and may order members to withdraw from the House or name them for suspension by the House itself for a period.
In the case of great disorder can suspend or adjourn the House.

The cathaoirleach is also an ex officio member of the Council of State, which advises the president of Ireland in the exercise of their discretionary powers, and of the Presidential Commission, which performs the powers and functions of the office of president in their absence.

This list includes the panel and political affiliation of each cathaoirleach, as well as the number of the Seanad and time they spent in the position.

The cathaoirleach's deputy is the leas-chathaoirleach.