The 2026 Italian football summer transfer window ran from 1 July to 1 September 2026 (20:00). This list includes transfers featuring at least one club from either Serie A or Serie B that were completed after the end of the 2025–26 season and before the end of the summer 2026 window on 1 September 2026. All transfers needed to be approved and registered by the Lega Serie A and Lega B respectively.

Transfers All players and clubs without a flag are Italian.

Legend Those clubs in Italic indicate that the player already left the team on loan on this or the previous season or a new signing that immediately left the club.