Diana Ana Maria Ion (born 27 November 2000) is a Romanian triple jumper.

[1] A member of CSM Oneşti, in July 2021 she finished sixth at the 2021 European Athletics U23 Championships in Tallinn with a jump of 13.27 metres.

[4] Ion competed for Romania at the 2023 European Athletics Team Championships in Silesia in June 2023.

[8] At the 2024 World Athletics Indoor Championships in Glasgow in March 2024, she finished in ninth place with a jump of 13.73 metres.

[9][10] At the 2024 European Athletics Championships in Rome in June 2024, she achieved her a personal best 14.23 metres to finish in fifth place overall.