This Practice Note provides an overview of the types of parties who may become involved (whether as plaintiff, defendant, third parties or notice parties) in civil litigation in Ireland, and the key procedural issues and practical considerations of which their legal advisors should be aware. It deals with the following types of party: corporations, partnerships, sole traders, minors, persons who lack capacity, the estate of a deceased party, State parties, notice parties, amicus curaie and litigants in person. This Practice Note also deals with the procedure for joining a party to proceedings, removing or substituting a party.