Teikyo University (帝京大学, teikyō daigaku^?) is a private university headquartered in the Itabashi ward of Tokyo, Japan. It was established in 1931 as Teikyo Commercial High School (帝京商業高等学校). It became Teikyo University in 1966. It is part of Teikyo Group, a multinational educational foundation that also operates language and cultural exchange facilities at pre-university levels in various countries.

The university consists of eight undergraduate facilities, one junior college, and six graduate schools. Five main campuses in Japan are supplemented by several overseas campuses that provide study-abroad opportunities for Japanese students, as well as Japanese-oriented learning for residents of the campuses' home countries. Total enrollment is about 20,000 students. Although the headquarters is the Itabashi campus, the majority of students (approximately 17,000) are enrolled at the Hachiōji campus in West Tokyo.

On September 18, 2002 the chief executive officer (CEO) of Tokyo's Teikyo University Shoichi Okinaga resigned over allegations of questionable donations from students seeking admission to its medical school.

On November 6, 2002 Tokyo prosecutors arrested the younger brother of Teikyo University's former chief executive officer (CEO) in connection with a scandal involving illegal donations to the university before admission of students, sources close to the case said.

On February 14, 2003 Japanese tax authorities accused Kimie Okinaga, younger sister of former Teikyo University President Shoichi Okinaga, of concealing more than 200 million in income from fees collected from parents seeking to enroll their children in Teikyo's medical school.

Many of Teikyo's U.S. colleges have been closed, some due to loss of accreditation.

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