The Grammy Award winner is in town as part of his DAMN. tour.
Lamar joined the lads and ladies in FLYEfit on Macken Street in the Grand Canal Dock for a workout ahead of Wednesday’s sold out show.
"Grammy award winning rapper @kendricklamar training before his sold out @threeireland arena show this week," read the caption.
The American rapper won four awards at the 60th Grammys last week and performed alongside U2 and Dave Chappelle. The DAMN. tour concludes in March in Germany.