Oscar Traynor was an Irish Fianna Fáil politician and republican who served as Minister for Justice from 1957 to 1961, Minister for Defence from 1939 to 1948 and 1951 to 1954, Minister for Posts and Telegraphs from 1936 to 1939 and Parliamentary Secretary to the Minister for Defence from June 1936 to November 1936. He served as a Teachta Dála (TD) from 1925 to 1927 and 1932 to 1961.

The Minister for Justice is a senior minister in the Government of Ireland and leads the Department of Justice. The Minister for Justice has overall responsibility for law and order in Ireland.