2022–23 National League 1 is the 35th season of the third tier of the English domestic rugby union competitions, and following a reorganisation of the league structure, it is reverting to a 14-team format. The reigning champions entering the season are Caldy who were crowned champions on 23 April 2022, following their final match of the season at home to runner-up Sale; beating them 13–9 in front of a club record attendance of 3,023. They were promoted to the RFU Championship. Blackheath (14th position) and Tonbridge Juddians (15th) were relegated to National League 2 East.