Sergey Lagodinsky (Russian: Сергей Лагодинский; born 1 December 1975) is a German lawyer and politician of the Alliance 90/The Greens who has been serving as a Member of the European Parliament since 2019.

[4] From 2011 until 2012, Lagodinsky was an attorney with the Berlin office of international law firm Orrick, Herrington & Sutcliffe.

During that time, he was (alongside Peter Feldmann) a co-founder and speaker of the party's Jewish Caucus (AJS), a position he held from 2007 until 2011.

[9] Since the 2024 European Parliament election, Lagodinsky has been serving as deputy chair of the Greens–European Free Alliance (Greens/EFA) group, under the leadership of co-chairs Terry Reintke and Bas Eickhout.

[10] In January 2025, Lagodinsky announced his intention to challenge Stefan Gelbhaar as the Green Party's candidate in the national elections for the Berlin-Pankow district.