The University of Texas posted an emergency alert on its website just before 10 a.m. local time (1500 GMT).
"Immediately evacuate ALL buildings and get as far away as possible. More information to come," the alert read.
Similarly, buildings at North Dakota State University (NDSU) in Fargo were evacuated as a result of a bomb threat.
“NDSU is requiring all employees and students to leave campus by 10:15 a.m. (1515 GMT)," the university said in a statement published on its website.
The University of Texas at Austin and North Dakota State University have ordered evacuation of all campus buildings after receiving bomb threats.
The University of Texas ordered the emergency evacuation after getting a phone call at about 8:35 a.m. local time (1335 GMT) on Friday.
The university spokesman, Gary Susswein, said the caller claimed to have placed bombs across campus.
“He said he was associated with al-Qaeda and said the bombs would go off in about 90 minutes," Susswein said.