Presidential Physics and Mathematics Lyceum No. 239, is a public high school in Saint Petersburg, Russia that specializes in mathematics and physics. The school opened in 1918 and it became a specialized city school in 1961. The school is noted for its strong academic programs. It is the alma mater of numerous winners of International Mathematical Olympiads and it has produced many notable alumni. The lyceum has been named the best school in Russia in 2015, 2016, and 2017.

Yuri Vladimirovich Matiyasevich, is a Russian mathematician and computer scientist. He is best known for his negative solution of Hilbert's tenth problem, which was presented in his doctoral thesis at LOMI.