Imperial period
Kazan University was founded on November 17, 1804, when Emperor Alexander I signed the Affirmative Letter and the Charter about the creation of the Kazan Imperial University. The first students, enrolled in 1805, were graduates of the First Kazan Gymnasium – an autonomous affiliate of Moscow State University, under whose auspices Kazan University first operated. It was not until 1814 that the university underwent its full opening. It was restructured as a classical university comprising four departments: moral and political sciences, physical and mathematical sciences, medical sciences and philology. Before Tomsk University was founded, the University of Kazan used to be the easternmost university in the Russian Empire, it was thus serving for Volga, Kama, and Ural regions, Siberia and the Caucasus.
In 1819, M. L. Magnitsky conducted a review of the university, in which he reported on 'the spirit of dissent and irreligion' that he had observed at the university. In his report to the Emperor, he spoke of the "public destruction" of the university and demanded it be closed, but Alexander I put the resolved 'why destroy what can be corrected'. Magnitsky was consequently appointed trustee of the Kazan school district, an action that negatively affected the university, with many professors being dismissed and 'harmful' books withdrawn from the library's collection. In addition, a strict barrack domestic regime was introduced for students of the university.
In 1819–1821 an alumnus and scholar of Kazan University Ivan Simonov participated in the discovery of Antarctica during the first round-the-world expedition and pioneered Antarctic studies.
In 1825, the Main Building of the university was built and, in 1830, the Main Campus was completed. This included the Library Building, Chemical Laboratory, dissection facilities, astronomical observatory, and clinics. It was the scientific faculties that were, at this time, organised into a number of research schools: mathematical, chemical, medical, geological.
In 1834, the journal Proceedings of Kazan University began to be published by academicians of the university and in 1835 Nicholas I ordered to establish three faculties: Philosophical (which was further subdivided into verbal and physical-mathematical departments), Faculty of Law and Faculty of Medicine.
In 1844, Karl Klaus, a professor at the university, discovered, and named in honour of Russia, Ruthenium, the only chemical element discovered in Tsarist Russia. Six years thereafter St. Petersburg University opened the Institute of Oriental Studies and all training materials and collections of Kazan University in this field were transferred to the capital of Imperial Russia. Shortly after that, there was a further reform of the university's structure, when in 1863, by the order of Alexander II, the university was reorganised into four departments: History and Philology, Physics and Mathematics, Law, and Medicine. A linguistic school was forming at the university during 1875–1883.
Around that time Vladimir Ilyich Ulyanov (Lenin), a future leader of the Soviet Union, studied law at the university from August 1887 until his expulsion due to 'student disturbances' in December 1887.
The university faced one of its greatest challenges during the Russian Civil War, when in August–September 1918 the siege and ultimate capture of Kazan by the Red Army and Czechoslovak Corps led to a large exodus of students and faculty members from the city. Subsequently, many of them were enrolled in state universities in Siberia and help they provided proved instrumental in the foundation of universities in Tomsk and Irkutsk.
Though approval was given in the Imperial period for Women to audit university lectures from 1859, the Higher Courses were not state funded and required local support, carrying high tuition fees. When petitioned by the university to create courses for women, Dmitry Tolstoy suggested that a curriculum modeled on the Guerrier Courses might be acceptable, though he continuously blocked their implementation in Kazan. In 1876, the imperial government, hoping to secure more qualified teachers, authorized creation of Higher Women's Courses in all cities in the empire which had a university. From October 1876, female applicants who had completed a girls' gymnasium; were certified instructors in arithmetic, history and Russian language; or passed an entrance examination could enroll in evening classes at Kazan University. Those who did not meet those requirements could attend as external auditors, but were excluded from course examinations. Students took six mandatory courses in art history, physics, Russian history and literature, and world history and literature. Optional courses included hygiene, languages, and mathematics.
In 1879, the founder of the Kazan Higher Women's Courses, N. V. Sorokin, expanded the offerings to include two specializations: "historical-philological and physico-mathematical". This opened up additional course offerings including algebra and geometry, chemistry, English language, German literature, geography, history of philosophy, history of physical and mathematical sciences, history of physics, and natural sciences. In 1881, aesthetics was added and in 1884, Latin began being offered as an elective class. The courses allowed women to access higher education for a decade before being permanently closed in 1886. In 1904, professors of the university formed a committee to reinstate the women's courses, but the plan was rejected because of it was economically not feasible. The plan was refused again in 1905, but in 1906, after the Revolution, authorities allowed the university to reinstate the Higher Women's Courses of the historical-philological department. The first Latvian to earn a degree in Folkloric Studies, Anna Bērzkalne, graduated as a Candidate of Philology from the Kazan Higher Women's Courses in 1917.