Abstract: A carpet cutting knife guide for cutting overlapping adjacent edges of two pieces of carpet to be laid adjacently on a floor. The guide has two lateral members substantially parallel to each other and spaced from each other. A platform member extends from the first lateral member to the second lateral member and has an opening through which at least a blade of a carpet cutting knife member can pass to thereafter be positioned substantially at the floor. The opening has in conjunction therewith at least one friction fit means whereby a portion of the knife member can be releasably retained. The platform member is constructed of a flexible material such that exerting a force thereon causes the knife member to limitedly move substantially perpendicularly toward the floor. Wheels are provided for manually moving the guide over the overlapping edges of the carpet to be cut.