Ellinas, 21, will be the first Greek-Cypriot to test a Formula 1 car when he gets behind the wheel of a Marussia MR02 tomorrow.
Ellinas will also participate in next month's young driver test for the team, which will take place at Silverstone.
"It goes without saying that I am thrilled to get this additional opportunity to drive the Marussia F1 Team MR02 race car," he said.
"I have been looking forward to the Young Driver Test since last Autumn and the weeks can’t pass quickly enough. Being able to conduct the straight line test this week will help to bridge the gap until Silverstone and will also mean I can hit the ground running there as I will already be familiar with the car systems and the Team’s procedures."
"In the meantime I have been trying to focus on my GP3 season as I want to give it my all. I can’t pretend I’m not excited about the F1 tests and I would like to thank the Marussia F1 Team for the faith they have shown in me. I hope to do a good job to reward that."