| 1886 | Founded in 1886 by Masayoshi Oshikawa and W.E. Hoy as Sendai Theological Seminary for the purpose of training Christian preachers. |
| 1891 | Renamed Tohoku Gakuin, starts as a college with 2 year preparatory course, 4 year regular course and a Department of Theology. |
| 1918 | The College is reorganized and reopens with the Departments of Theology, Liberal Arts, Commerce and the Teacher Training Course. |
| 1949 | Tohoku Gakuin College is raised to the status of a university and establishes the Faculty of Letters and Economics based upon the Fundamentals of Education Act and the School Education Act. |
| 1959 | Tohoku Gakuin University (TGU) establishes the Night School for the Faculty of Letters and Economics. |
| 1962 | TGU opens the Faculty of Engineering in Tagajo. |
| 1964 | The Faculty of Letters and Economics is divided into the Faculty of Letters and the Faculty of Economics. The Night School is also divided the same way. In the same year, TGU establishes the Graduate School Division of Letters. In the following years, the other faculties establish divisions in the Graduate School. |
| 1965 | TGU establishes the Faculty of Law. |
| 1989 | TGU establishes the Faculty of Liberal Arts on Izumi campus. |
| 2004 | TGU establishes the Law School. |
| 2009 | TGU establishes the Faculty of Business Administration and the Faculty of Economics-Department of Co-existing Society Studies |
| 2011 | TGU establishes the Faculty of Letters-Department of General Humanities. |
