  We contrast the experimental signatures of low energy supersymmetry and the
model of Universal Extra Dimensions and discuss various methods for their
discrimination at hadron colliders. We study the discovery reach of the
Tevatron and the LHC for level 2 Kaluza-Klein modes, which would indicate the
presence of extra dimensions. We find that with 100 ${\rm fb}^{-1}$ of data the
LHC will be able to discover the $\gamma_2$ and $Z_2$ KK modes as separate
resonances if their masses are below 2 TeV. We also investigate the possibility
to differentiate the spins of the superpartners and KK modes by means of the
asymmetry method of Barr.
