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.

There is one promotion place, with the champions promoted to the RFU Championship, and there are three relegation places to either, National League 2 East, National League 2 North or National League 2 West, depending on the geographical location of the team.

[2] The results of the matches contribute points to the league table as follows: 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.

Blackheath (14th position) and Tonbridge Juddians (15th) were relegated to National League 2 East.

[3] Fixtures for the season were announced by the RFU on 13 June 2022.