Fretless guitar players ?

[schopenhauer]

There is a Scottish guitarist called Roy Marchbank who, from time to time,
plays a fretless with an Uzbeki group. If you scroll to the 04:30 mark you can catch his soloing:

His website is found at:

ROY MARCHBANK | Roy Marchbank | World Fusion Guitarist & Composer

[Dheeraj Chand]

Did you ever build one? I would buy it.

[Ingo Lee]

Ned Evett plays fretless with an interesting approach.

He's playing a glass guitar, also interesting.

[Bob_Ross]

I went to college with Timothy Donahue, who even back then (this was ~40+ years ago) had a distinctive voice and impressively comprehensive grasp of fretless guitar...the more current stuff of his I've heard is even more mind-boggling.

Adrian Belew played a bunch of fretless guitar on his solo album Desire Caught By The Tail, and on King Crimson's Three Of A Perfect Pair.

Marc Ducret (mentioned earlier in this thread) played some fretless guitar on Tim Berne's Caos Totale albums.

[Bob_Ross]

...oh, and I just remembered another one: Randy Roos played fretless guitar all over his 1978 album Mistral (which also features Mike Stern).

[Mick-7]

There is a Scottish guitarist called Roy Marchbank who, from time to time, plays a fretless with an Uzbeki group.

ROY MARCHBANK | Roy Marchbank | World Fusion Guitarist & Composer

He has fret markers on his fingerboard, that's cheating!

Ned Evett plays fretless with an interesting approach. He's playing a glass guitar, also interesting.

Slide guitar though, wrong genre.... people who live with glass guitars should not play rock.