The Minister for Posts and Telegraphs was the holder of a position in the Government of Ireland. From 1924 until 1984 – when it was abolished – the minister headed the Department of Posts and Telegraphs, the government-run postal, telegraph and telephone service covering the Republic of Ireland.

The Constitution of Ireland vests executive authority in the Government of Ireland, which is headed by the Taoiseach, the head of government. The government – also known as the cabinet – is composed of ministers, each of whom must be a member of the Oireachtas, which consists of Dáil Éireann and Seanad Éireann. Most ministers have a portfolio of specific responsibilities such as departments or policy areas, although ministers without portfolio can be appointed.