
Aiken Barracks is an army barracks located in Dundalk, County Louth, Ireland. The barracks was originally known as Dundalk Barracks and was renamed after Frank Aiken, a commander of the Irish Republican Army and an Irish politician. It is the current Headquarters of the 27 Infantry Battalion of the Irish Army.

Ballymullen Barracks is an Irish military installation at Tralee, County Kerry in Ireland.

Beggars Bush Barracks was a British Army barracks located at Beggars Bush in Dublin, Ireland.

Castlebar Military Barracks was a military installation at Rock Square in Castlebar, County Mayo in Ireland.

Cathal Brugha Barracks is an Irish Army barracks in Rathmines, Dublin. A key military base of the Irish Defence Forces, it is the headquarters of 2 Brigade, and houses the Military Archives of the Department of Defence.

Collins Barracks is a military barracks on the Old Youghal Road on the north side of Cork in Ireland. Originally serving as a British military barracks from the early 19th century, it was handed-over to the Irish military following the Irish War of Independence, and remains the headquarters of the 1st Brigade of the Irish Army. A museum in the barracks is open to the public at selected times.

Collins Barracks is a former military barracks in the Arbour Hill area of Dublin, Ireland. The buildings now house the National Museum of Ireland – Decorative Arts and History.
Columb Barracks was a military installation at Mullingar in Ireland.

Connolly Barracks is a military installation in Longford, Ireland.

Crinkill Barracks was a military installation in Crinkill, near Birr, County Offaly in Ireland.

Custume Barracks is a military installation at Athlone in Ireland.

Devoy Barracks was a military installation in Naas, County Kildare in Ireland.

Fermoy Barracks was a military installation in Fermoy, County Cork.

Finner Camp is a military installation near Ballyshannon in Ireland.

Geneva Barracks in County Waterford, Ireland, was a barracks created in 1783 by converting a settlement which had been created for an 18th-century colony of disaffected citizens of Geneva following the Geneva Revolution of 1782. Built near Passage East, the colony was commissioned by the Irish Parliament and approved by British Royalty. After the Genevans abandoned their plans to settle in Waterford, the colony became a British military barracks which gained notoriety as a deadly holding centre for rebel prisoners during and after the 1798 rebellion. Today, the only remains of New Geneva are its ruined walls in a grassy field.

Gormanston Camp is a military camp in Ireland and consists of approximately 260 acres. It is used for air-ground and air-defence training. It is located between Balbriggan and Drogheda along the east coastline of Ireland in County Meath in close proximity to the M1 Motorway and Gormanston railway station.

Griffith Barracks is a former military barracks located on the South Circular Road, Dublin, Ireland.

Kickham Barracks was a military installation in Clonmel, Ireland.

This is a list of Irish military installations occupied by the Defence Forces in the Republic of Ireland by province and overseas.

McCan Barracks is the site of two agents of the Irish state: the Garda Síochána College and the Defence Forces. It is located in Templemore, County Tipperary, Ireland. It is named after Pierce McCan who fought in the Irish War of Independence. It took on the role as the national centre for training the Garda Síochána – Ireland's police force – in 1964 when Garda Headquarters in the Phoenix Park ceased to perform that role. The barracks is home to a unit of the Irish Army Reserve and also houses a small detachment of the regular defence forces.

McKee Barracks is a military installation near Phoenix Park in Cabra, Dublin, Ireland.

Renmore Barracks is a military installation in Renmore, Ireland

Richmond Barracks was a British Army barracks in Inchicore, Dublin, Ireland. It is now a museum.

Rockhill Barracks was an Irish Army barracks located in Letterkenny, County Donegal. The Barracks was forced to close due to the 2008 economic meltdown.

Sarsfield Barracks is an Irish Army Barracks in Limerick city. It houses both Permanent and Reserve Defence Forces of the Irish Defence Forces.

Stephens Barracks is a military installation in Kilkenny, Ireland.

The Strand Barracks is the former army barracks on Clancy's Strand in Limerick city, Ireland.

Waterford Barracks were a military installation in Waterford, Ireland.