Innocent Gizel (Russian: Иннокентий (Гизель), romanized: Innokenty (Gizel); c. 1600 – November 18, 1683) was a Prussian-born historian, writer, and political and ecclesiastic figure.^[1] He adopted Orthodox Christianity and made a substantial contribution to Russian and Ukrainian culture.

Innocent Gizel was a rector of the Kievan Theological School. In 1656, he was appointed archmandrite of the Kiev Pechersk Lavra. Innocent Gizel is known to have supported the unification of Ukraine and Russia and autonomy of the Kiev clergy, simultaneously. Innokentiy Gizel is generally credited for writing the Synopsis in 1674, but some researchers deny his authorship.

• Иннокентий (Гизель) // Русский биографический словарь А. А. Половцова/ — СПб., 1897.(in Russian)
• Иннокентий (Гизель) // Православная энциклопедия. — М. : Церковно-научный центр «Православная энциклопедия», 2009. — Т. XXII. — 752 с. — 39 000 экз. — ISBN 978-5-89572-040-0.(in Russian)
• MIKHAIL ZYGAR: "Describing Ukrainians as Russians started back in the 17th century. The first person who did it was a German monk named Innokenty Gizel" - Time, February 10, 2024