The Senate of the Parliament of the Czech Republic is a constitutional institution who, together with the Chamber of Deputies, executes the legislative power. Thus, it fulfills the powers vested in it by the Constitution of the Czech Republic and other laws.

The Senate of the Parliament of the Czech Republic has 81 members. Every other year one third of the Senate is re-elected. Senators are elected to committees, commissions and delegations during a constituting plenary session that takes palace after each regular election. At the same time, senators form caucuses according their party affiliation.