**Fyodor L. Zak** (Федор Лазаревич Зак ; born Moscow, 1949 December 2) is a Russian mathematician working on mathematical economics and algebraic geometry who classified the Scorza varieties.

Zak, F. L. (1993), *Tangents and secants of algebraic varieties*, Translations of Mathematical Monographs, **127**, Providence, R.I.: American Mathematical Society, ISBN 978-0-8218-4585-1, MR 1234494