The 1992–93 ADT Security Systems Rugby Union County Championship was the 93rd edition of England's County Championship rugby union club competition.[1][2]Lancashire won their 16th title after defeating Yorkshire in the final.[3][4]
The Championship was now so far behind the Courage League in terms of priorities that a decision was made to make the following season's edition only eligible to players from teams outside the top two divisions of the Courage League.[4]