Alexei Demosfenovich Bogaturov is a Russian international relations scholar, chairman of the International Trends editorial board, President of the Academic Forum on International Relations, Distinguished Scholar of Russia. He is an advisory board member of the Center for Global Politics, Berlin, Germany.

Alexei Fyodorovich Bogomolov was a Soviet and Russian scientist and a specialist in the field of radio engineering.

Alexei Alexeyevich Borovoi (1875–1935) was a Russian individualist anarchist writer, orator, teacher and propagandist.

Alexei Bueno is a leading contemporary Brazilian poet. As curator, he organized more than eighty exhibitions, on Fine Arts or on the History of Literature. As editor, he published many selected or complete works of great classics of the Portuguese language, as Camões, Fernando Pessoa, Mário de Sá-Carneiro, Almada Negreiros, Gonçalves Dias, Álvares de Azevedo, Machado de Assis, Cruz e Sousa, Olavo Bilac, Alphonsus de Guimaraens, Augusto dos Anjos and Vinicius de Moraes.

Alexei Augustovich Davidov (1867-1940) was a Russian cellist and composer, and also a banker, industrialist, and businessman.

Alexei I. Miller is the Russian professor of history at Central European University and formerly research fellow at the Russian Academy of Sciences, senior fellow at the Institut für die Wissenschaften vom Menschen.

Alexei Viktorovich Ivanov is a Russian award-winning writer.

Alexei Khvostenko was a Russian avant-garde poet, singer-songwriter, artist and sculptor. Khvostenko is also frequently referred to by the nickname Khvost, meaning "tail".

Alexei Yevgrafovich Kosterin was Soviet writer, and Bolshevik, Gulag survivor, and a prominent campaign for civil rights in the USSR in the 1950s and 1960s.

Alexei Ivanovich Kostrikin was a Russian mathematician, specializing in algebra and algebraic geometry.