Ballycroy (Irish: Baile Chruaich meaning "town of the stacks", either hay or turf) is a village in the civil parish of Kilcommon in County Mayo, Ireland. It was the location for the 1982 television film The Ballroom of Romance. The ballroom used in the film still exists, albeit in a derelict condition, and is located at Doona Cross, west of the village. Ballycroy is home to one of Ireland's National Parks, Wild Nephin (Ballycroy) National Park.

Ballycroy is also the name of two electoral divisions (ED) that form part of the local electoral area of Belmullet. As of 2011, Ballycroy North ED (containing 16 townlands) and Ballycroy South ED (containing 25 townlands) had a combined population of 663 people, scattered throughout numerous settlements.

Population census

Year	Pop.	±% p.a.
1831	2,925	—
1891	2,036	−0.60%
1941	1,648	−0.42%
2011	663	−1.29%

According to tradition, the first settlers in Ballycroy were from the Belgic Damnonii tribe, the Fir Domnann. Prehistoric settlement is recorded with structures including a portal tomb near Claggan Hill and a court cairn in the townland of Drumgallagh. Similarly, a medieval church dedicated to Enda of Aran once stood here, since demolished.

A similar historic fort is mentioned in Lettra as extant during the era of Táin Bó Fliadhas. Meanwhile, Fahy, a nearby townland, is home to a castle. The coast of Fahy experienced wrecks of Spanish ships as part of the Spanish Armada.

A bridle path that ran from Bangor Erris to Newport once passed through the area, it was used by Sir Richard Bingham to drive cattle from Erris.

In the 17th century the Cormack family owned Ballycroy. After supporting Jacobitism Cormack's descendants lost their land, which was then given to the Shaens.

In 1654 Catholics were expelled from Ulster to Mayo and several resettled in Ballycroy and the neighbouring Barony of Burrishoole.

Believed to have landed at Fahy, they were guided to Ballycroy by the O'Donnell family, several of these later converted to Anglicanism.

The people were described in the 19th century by Patrick Knight as continuing to maintain their Ulster dialect, intermarrying within their community.

Several hunting lodges were constructed, including one used as a station for the Black and Tans.

In the early 20th century, the Congested Districts Board and the Irish Land Commission purchased the land around Ballycroy and gradually distributed it to tenants, settling herders to lower lands.

The village is located on the N59 road. The two Ballcroy EDs cover approximately 51,943 acres, with a large portion consisting of mountain pasture. William Hamilton Maxwell in Wild Sports of the West (1832) described the terrain as characterised by bogs, morasses, expansive waters, and grazing lands. Most of the rock is composed of Mica Slate and Quartz.

The Owenduff River and the Bellyveeny Rivers run through the townland.

A Church of Ireland church dedicated to the Holy Trinity was constructed in the townland of Castlehill. Built in 1850 and consecrated in 1854, the church, designed by the Ecclesiastical Commissioners, is now in ruins. The church was closed in 1963 and fell into disrepair by 1991.

The local Catholic church was completed in 1853 and is dedicated to the Holy Family. The foundation stone for the church was laid in 1845 and was built in the shape of a cross. The old Catholic Church, a thatched building in the townland of Gortbrack, was destroyed during the Night of the Big Wind in 1839.

In the village of Ballycroy there is a school, Garda station, two pubs, a cemetery and the visitor centre for the Wild Nephin National Park. A community centre opened in 1976.

• List of towns and villages in Ireland