Tula State University (TSU) (Russian: Ту́льский госуда́рственный университе́т, ТулГУ) is the biggest state university in Tula, Central Russia. Since May 2006 its rector is Mikhail Vasilievich Gryazev, professor, doctor of technical sciences. More than 20,000 students, 400 post graduates, and 600 foreign students from 30 countries study at Tula State University.