Pines are very important economically. There is a diverse set of studies related to chemical composition of Pine extracts and their activities. This review discusses the different compounds of 4 species of pine; Pinus halepensis, Pinus pinaster, Pinus pinea and Pinus brutia which include Terpenoids, Phenolic, Resin and Fatty acids. Many activities are attributed to them, such as herbicidal, antifungal, antiradical, antimicrobial and many others. Chemical composition of some pine extracts and their activities are discussed herein, and structure–activity relationships are presented when appropriate