Queequay
this was the name used to describe the Weequay race during the filming of Return of the Jedi, an indication of the origin of the name which was inspired by the character Queequeg from Moby Dick. (CHRN)

Quidultii
this was one of the original names used to describe the character Nabrun Leids, during post-production on Star Wars: Episode IV - A New Hope. (OWS)

Quist
one of three underground leaders known to Han Solo in the first draft of Star Wars. Along with Datos and Occo, he helped get Luke Skywalker off Utapau in a Baltarian freighter. (TAS)