Forward jets at CMS

This report presents three recent measurements on forward jets at the CMS detector in proton-proton collisions at $\sqrt{s} = 7$ TeV. The first measurement performed for single inclusive forward jet production cross section. The second one concerns cross section of dijet events with one forward and one central jet. The third measurement is devoted to ratios of inclusive and exclusive dijet cross sections as function of rapidity interval between jets up to $\vert \Delta y \vert = 9.2$.