A minister without portfolio is a government minister without specific responsibility as head of a government department. The sinecure is particularly common in countries ruled by coalition governments and a cabinet with decision-making authority wherein ministers without portfolio, while they may not head any particular offices or ministries, may still receive a ministerial salary and have the right to cast a vote in cabinet decisions. The office may also exist to give party leaders whose offices would not otherwise enable them to sit in Cabinet.

Henrik Kauffmann was the Danish ambassador to the United States during World War II, who signed over part of Greenland to the US.