The accident took place early yesterday when the workers, all from Kerala, were returning from a work site and were hit by a speeding trailer at Salwa near Dammam, 381 kilometres from here.
The deceased were identified as Santosh Kumar, Iqbal Noman, Tulsi Krishnan, Ravindra Nair and Shiva Kumar Bhagvati Pillai, Arab News quoted Indian embassy official Manoj Kumar as saying.
"All of them died on the spot. The embassy is in contact with the company and helping, with the aid of volunteers, to send them to their families back in India," Manoj said.
Last week, four members of a Riyadh-based Indian family, who were returning from Makkah, died when their car collided with a truck, 150 kilometres from the capital Riyadh.