Artus Gheerdinck (1564 -1624) was a Dutch harpsichord builder. Gheerdinck lived and worked in Amsterdam, where he was appointed carilloneur of the Oude Kerk (Old Church) in 1595. This was the same time period that Sweelinck was organist there. Gheerdinck had a workshop in an attic space at the church, and tuned both the church’s organs. There was also a Harmanus Gheerdinck living in Amsterdam in the mid-1600s, but his relation (if any) to Artus is unknown. Harmanus was also a harpsichord builder.