Olivier Klein (born 16 February 1967) is a French politician who served as Minister Delegate of Cities and Housing in the government of Prime Minister Élisabeth Borne from 2022 to 2023.

[1][2] Klein joined the Socialist Party (PS) in 2006.

[3] He served as mayor of Clichy-sous-Bois from 2011 to 2022.

In 2017, Klein was appointed as president of the National Agency for Urban Renewal (ANRU).

[4] Ahead of the 2022 presidential elections, Klein endorsed incumbent President Emmanuel Macron.