Ubaya was a location referenced in the Tamarian language. The location, which was associated with the individual Jiri, was described as being "of crossed roads". It was mentioned in a greeting by Captain Dathon to the Federation starship USS Enterprise-D in 2368. (TNG: "Darmok")

This location was only mentioned in dialogue.
According to the script, Ubaya was pronounced as "oo-BUY-uh".