Sergei Ivanovich Zarudny (Ukrainian: Сергій Іванович Зарудний, romanized: Serhiy Ivanovych Zarudnyi; Russian: Сергей Иванович Зарудный; March 29 [O.S.

March 17], 1821 – December 30 [O.S.

December 18], 1887 ) was a legal scholar, lawyer, senator, and privy councillor in the Russian Empire, mostly during the reign of Alexander II.

He was a supporter of the emancipation reform of 1861, which freed serfs; and played a key role in writing the Russian Judicial Reform Act of 1864, which established an independent judiciary and extended the right to a trial by jury to all defendants.

He was born in the village of Kolodiazne [uk] in the Russian Empire (now in Kharkiv Oblast, Ukraine), and died near Nice, France.