  Differential cross sections for the production of at least four jets have
been measured in proton-proton collisions at $\sqrt{s} = 8$ TeV at the Large
Hadron Collider using the ATLAS detector. Events are selected if the four
anti-$k_{t}$ R=0.4 jets with the largest transverse momentum ($p_{T}$) within
the rapidity range $|y|<2.8$ are well separated ($dR^{\rm min}_{4j}>0.65$), all
have $p_{T}>64$ GeV, and include at least one jet with $p_{T} >100$ GeV. The
dataset corresponds to an integrated luminosity of 20.3 $fb^{-1}$. The cross
sections, corrected for detector effects, are compared to leading-order and
next-to-leading-order calculations as a function of the jet momenta, invariant
masses, minimum and maximum opening angles and other kinematic variables.
