The 1992–93 Courage National 4 South was the sixth full season of rugby union within the fourth tier of the English league system, currently known as National League 2 South.

By the end of the campaign Sudbury were crowned league champions, 2 points clear of runners-up London Welsh.

This meant that champions Sudbury were promoted into the 1993–94 Division 4 while everyone else fell to Courage League Division 5 South.

Changes to the league structure by the RFU for the 1993-94 season meant that the champions are promoted to Courage League Division 4 while the other twelve sides went into Courage League Division 5 South.

[2] National League 4 South is part of the Courage Clubs Championship and is sponsored by Courage Brewery.