Look up Southern Ireland in Wiktionary, the free dictionary.

Southern Ireland, South Ireland or South of Ireland may refer to:

• The southern part of the island of Ireland
• Southern Ireland (1921–1922), a former constituent part of the United Kingdom
• Republic of Ireland, which is sometimes referred to as "Southern Ireland"
• South (European Parliament constituency)
• Southern, IE05, one of the level 2 NUTS statistical regions of Ireland