Abstract: The playing card organizer comprises: a planar mat having a playing surface and a back surface, a plurality of strap members aligned parallel to one another and connected to the playing surface, and a plurality of card slots defined by the strap members and the playing surface adapted for holding playing cards in a fixed position. The playing card organizer allows a player to collect books of cards of the same rank together and facilitates the playing of card games in windy locations or on unstable surfaces.