Clondalkin Round Tower (Irish: Cloigtheach Chluain Dolcáin) is an Irish round tower or cloigtheach founded by Saint Mochua, also known as Saint Cronan, and located in Clondalkin, South Dublin, Ireland.

Clondalkin Round Tower is built on the site of a monastery founded by Saint Mochua/Cronan [10] in the 7th century.

In 867 a force led by Cennétig mac Gaíthéne, king of Loígis, burned the fortress at Clondalkin and killed 100 of Amlaíb’s followers.

The district remained under Danish control until the Viking defeat by Brian Boru at the famous Battle of Clontarf in 1014.

Built on the site of a monastery founded by Saint Mochua in the 7th century AD, the Irish round tower at Clondalkin is one of four remaining towers in County Dublin, the other three are located at Swords, Lusk and Rathmichael.

Along the boundary to the right of the new church is a large granite baptismal font which may date back to the original monastic times.