A printed circuit board includes an internal insulating layer, an internal conductive pattern layer disposed on the internal insulating layer and including a line portion and a bonding pad portion, and an external insulating layer disposed on the internal conductive pattern layer and the internal insulating layer and having an accommodation groove extending therethrough to expose the bonding pad portion. The bonding pad portion includes a connection pattern extending from the line portion of the internal conductive pattern layer embedded in the external insulating layer, and exposed to the accommodation groove; a land pattern disposed closer to a center portion of the accommodation groove than the connection pattern; and a dam pattern connecting the connection pattern and the land pattern, in which a line width of the dam pattern is narrower than a line width of the land pattern.