Marie Arena (born 17 December 1966) is a Belgian politician who was a Member of the European Parliament (MEP) from 2014 to 2024.

Until 17 July 2009, she was also Federal Minister for Social Integration, Pensions and Large Cities in the Leterme I Government, which took office on 20 March 2008.

[11] Amid the Qatar corruption scandal at the European Parliament, Arena's offices were searched in December 2022.

[12] She resigned her post as chair of the subcommittee on human rights on 11 January 2023, following allegations that she failed to declare a trip in May 2022 which had been paid for by the Qatari government.

[16] In January 2025, she confirmed to media that she had been charged with belonging to a criminal organization in connection with the Qatargate case.