The 2025 Rally Italia Sardegna (also known as the Rally di Sardegna 2025) was a motor racing event for rally cars that held over four days from 5 to 8 June 2025. It marked the twenty-second running of the Rally Italia Sardegna, and was the sixth round of the 2025 World Rally Championship, 2025 WRC2 Championship and 2025 WRC3 Championship. The 2025 event was based in Olbia in the Province of Sassari and was contested over sixteen special stages, covering a total competitive distance of .
Ott Tänak and Martin Järveoja were the defending rally winners, and their team, Hyundai Shell Mobis WRT, were the defending manufacturer's winners. Sami Pajari and Enni Mälkönen were the defending rally winners in the WRC2 category, but they did not defend their titles as they were promoted to the top tier by Toyota. Diego Dominguez Jr. and Rogelio Peñate were the defending rally winners in the WRC3 category.
Sébastien Ogier and Vincent Landais won the rally, and their team, Toyota Gazoo Racing WRT, successfully defended their titles. Roberto Dapràand Luca Guglielmetti were the winners in the WRC2 category. Matteo Fontana and Alessandro Arnaboldi were the winners in the WRC3 category.
The following crews entered into the rally. The event was opened to crews competing in the World Rally Championship, its support categories, the WRC2 Championship, the WRC3 Championship and privateer entries that were not registered to score points in any championship. Twelve entered under Rally1 regulations, as were thirty-four Rally2 crews in the WRC2 Championship and eight Rally3 crew in the WRC3 Championship.
All dates and times are CEST ().