The evacuation order was posted on the College Station university's website as a "Code Maroon" warning. It directed those on campus to evacuate by foot immediately and to not use a vehicle. The school said all classes were canceled and the evacuation would remain in effect until further notice.
Texas A&M spokesman Lane Stephenson said the school received a call about the bomb threat at about 11:30 a.m. He didn't immediately have any other information about the threat.
Officer Rhonda Seaton, a spokeswoman for College Station Police, said her department was assisting with traffic control around campus.
Last month, telephoned bomb threats at the University of Texas at Austin, as well as ones made to campuses in North Dakota and Ohio prompted tens of thousands of people to evacuate. No bombs were found at any of those campuses.