Mikhail Lavrentyev, Russian mathematician and hydrodynamicist (d. 1980)

Mikhail Alekseevich Lavrentyev (or Lavrentiev, Russian: Михаи́л Алексе́евич Лавре́нтьев) (November 19, 1900 – October 15, 1980) was a Soviet mathematician and hydrodynamicist.