The 2025 Moselle Open was a men's tennis tournament played on indoor hardcourts. It was the 22nd and last edition of the event, and part of the ATP 250 tournaments on the 2025 ATP Tour. It took place at the Arènes de Metz from 2 to 8 November 2025.
The following players received wildcards into the singles main draw:
The following player received entry through the Next Gen Accelerator programme:
The following player received a late entry into the singles main draw:
The following players received entry from the qualifying draw:
The following players received entry as lucky losers:
The following pairs received wildcards into the doubles main draw: