Abstract: Apparatus for cutting and splitting logs, preferably into firewood wherein both the cutting and the splitting of the log are performed in the same operation, the tree trunk is placed on a foundation, and guided comprising a foundation with post members upstanding therefrom and two vertically-disposed knives in a T-shaped configuration operating vertically between said posts, the lateral edges of at least one knife member being guided in a guide member. The knives are driven downwardly toward the log so that the tree is cut crosswise and split longitudinally in the same working operation.