Killashee Round Tower, Irish round tower in County Kildare, Ireland

Killashee Round Tower is a small Irish round tower of uncoursed granite blocks, covering three storeys. It is built into the fabric of the 18th-century stone church in an unusual way, with the A-roof line of the earlier medieval church still visible on its east wall. The tower is surrounded by a graveyard.

The structure dates to the 12th or 13th century and belongs to a tradition of round towers built across Ireland during the medieval period. Its design reflects architectural patterns shared with other similar towers constructed during this era of Christian development in the region.

The tower functioned as a bell house positioned near a church to help mark where Christian communities gathered. Its location made it a visible sign of faith and a meeting point for religious life in the area.

The tower and its surrounding graveyard are on private land and the church is closed to the public, so the site is not open for visits; it is recorded as monument KD024-003. The tower stands heavily overgrown with ivy, and the nearby holy well dedicated to Saint Patrick is also on this land.

The tower is built of uncoursed granite blocks and covers three storeys. Its incorporation into the fabric of the 18th-century church is unusual; the closest parallel is St Kevin's Kitchen at Glendalough. The A-roof line of the earlier medieval church can still be seen on the tower's east wall.