Uncle Traveling Matt is a fictional puppet character from Jim Henson's television series Fraggle Rock.

In the first episode of the series, "Beginnings", Matt discovers an entrance leading from Fraggle Rock into "Outer Space", aka the human world.

He subsequently leaves Fraggle Rock and devotes his time to exploring Outer Space, sending back postcards to Gobo recounting his adventures.

Gobo must journey into Outer Space, and get past Doc's dog Sprocket, in order to retrieve these postcards.

While he continues his explorations in Outer Space, Matt returns to Fraggle Rock more often from this point on, telling Gobo of his exploits in person instead of sending postcards.

As Goelz later said in a 2011 interview: “The original concept for him was that he went out and misinterpreted everything and then sent postcards back that we saw on video, where he described the outside world in a distorted way.

"[10] Uncle Traveling Matt was designed by Michael K. Frith and built by Tim Clarke.