Police have said he was 21-year-old James Campbell from the Gilford area.
His bike collided with a tractor on the Ballymacanallen Road at about 13:25 BST on Wednesday.
The road was closed following the incident, but has since reopened.
Insp Gregory Beckett said: "We would like to hear from anyone who was travelling on the Ballymacanallen Road or who witnessed the collision."
A motorcyclist has died after a crash near Gilford, County Armagh.