Ebrahimi says Iran will first attempt to send the astronauts into sub-orbital space, up to a distance of 200 kilometers (125 miles), for about 30 minutes.
The announcement is the latest in a series of statements from Iranian officials on the government's ambitious space program. Last week, Iran said it sent a monkey into space successfully.
Tehran's nuclear and space programs have raised concerns in the West, which suspects they could be used for military purposes. Iran denies the charges.