Campbell will be driving for the Fach Auto Tech team in the prestigious championship after a dominant title-winning season in Carrera Cup Australia and victory in the Porsche Supercup Scholarship in 2016.
“I'm very fortunate, very privileged to be part of such a program,” said the Queenslander, now based in Germany.
“Not many people can be in it and luckily I'm one of the juniors this year.”
The 22-year-old's preparation has included a race on Germany's famous Nurburgring Nordschleife in the VLN series last month.
Round 1 of Porsche Supercup will be held at the Circuit de Barcelona-Catalunya from May 12-14.
VIDEO: Campbell looks forward to Porsche Supercup debut