The Lapolis system was a star system.

While docked at Deep Space 9 in 2369, the USS Enterprise-D was ordered to the system and left the station soon after. (DS9: "Emissary")

According to the script, the pronunciation for Lapolis was "lay-PO-lis". [1]
According to, the primary of this system was named Lapolis (pronounced "LAPP-oh-liss"). It was located in the Alpha Quadrant.