Jan M. Passer' (born in 1974) is a Czech jurist. He has been a Judge at the European Court of Justice since 2016.

Passer was born in Prague in 1974.^[2]

He studied law at the Faculty of Law of Charles University in 1997, at the Faculty of Law of Stockholm University (LL.M. in 2000). He has a Doctor of Laws in 2007.^[2]

In 2001, he worked as a judge of the District Court for Prague 2.^[1] From 2004, he was a trainee judge and from 2005, a regular judge of the Supreme Administrative Court, where for a certain period, he worked, among other things, as the chairman of the electoral senate.^[1]

In February 2016, he was selected as a candidate for the position of judge of the Tribunal of the Court of Justice of the European Union; he became a member of the Tribunal as the second Czech judge after Irena Pelikánová on September 19 of the same year.^[3]

He was appointed to the European Court of Justice from 6 October 2020 to 6 October 2024 where he replaced Jiří Malenovský.^[4][5] Passer was reappointed for a full six-year term from 7 October 2024 to 6 October 2030 in November 2023.^[6]