The official 2012/2013 snooker world ranking points for the professional snooker players on the World Snooker Main Tour in the 2012–13 season were based on performances in ranking tournaments over a two-year rolling period. The total points from the 2010/2011 and 2011/2012 seasons set the rankings at the start of 2012/2013 season and were updated after every ranking tournament. As points were accrued from tournaments in the current season, the points from the corresponding tournaments from two seasons ago were dropped. The rankings set the official seedings at the start of the season and at four further points during the season. The total points accumulated by the cut-off dates for the revised seedings were based on all the points up to that date in the 2012/2013 season, all of the points from the 2011/2012 season, and the points from the 2010/2011 season that had not yet been dropped. The total points from the 2011/2012 and 2012/2013 seasons set the rankings at the start of the 2013/2014 season.
^"Ch" = Change since the beginning of the season 2012/2013. See [3] for the player rankings at the start of the season.
^The 2010/2011 points only included the ranking points that counted towards the next seedings update. See [5] for the points accumulated during the 2010/2011 season and see [3] for points accumulated during the 2011/2012 season. Players ranked outside of the top 64 at the beginning of the 2012/2013 season had any points accumulated from the previous seasons wiped, and started again on 0 points. Players on 0 points were ranked alphabetically.[6]
^See [7] for the points accumulated during the 2012/2013 season up to the first cut-off point; see [8] for the points accumulated between the first and second cut-off points; see [9] for the points accumulated between the second and third; see [10] for the points accumulated between the third and fourth cut-off points; see [11] for the points accumulated at the World Championship.
^See [12] for the rankings at the first seedings cut-off point; see [13] for the rankings at the second cut-off point; see [14] for the rankings at the third cut-off point; see [15] for the rankings at the fourth cut-off point; see [16] for the rankings at the end of the season.
^Joe Jogia was banned from all WPBSA events for the whole 2012/2013 season,[17] and was removed from the official rankings following the 2013 Munich Open,[18] after his WPBSA membership was terminated.[19]