The institution referred to itself as the "Lyndon B Johnson School of Pubic Affairs" on the front of the document, which was distributed to students.
"This year's commencement programme cover contained an unfortunate typographical error, which has since been corrected and is being distributed," the school said on Twitter.
"Our deepest apologies to our 2012 graduates for the egregious typo in our commencement programme. We are working to distribute new programmes."
Assistant dean for communications at the school Susan Binford told media blogger Jim Romenesko: "Obviously, we are mortified. It's beyond embarrassing.
"As soon as we realised the mistake, everybody went into overdrive and we went to work to reprint... No one is laughing about this at the LBJ School."