Laurence's Gate is a barbican which was built in the 13th century as part of the walled fortifications of the medieval town of Drogheda, County Louth, in Ireland. The original names for Laurence St and Laurence's Gate were East St and East Gate, respectively. In the 14th century, the street and Gate were renamed because they led to the hospital of St. Laurence, which stood close to the Cord church.

It consists of two towers, each with four floors, joined by a bridge at the top and an entrance arch at street level. Entry is gained up a flight of stairs in the south tower. There is a slot underneath the arch from where a portcullis could be raised and lowered. Historians have wondered why such an enormous barbican was built here in the east of the town, when the main artery through the town has always been north/south. For example, a similar barbican in Canterbury is less than half the height of Laurence's Gate. However, from the top of the Gate, the estuary of the Boyne and the four mile stretch of river from there to Drogheda can be clearly observed. This is the only point in the town with a clear view of any potential sea invasion. This is proposed as a reason why Lawrence's Gate was built to such a height.