An abundance of evidence shows that Standard Model (SM) particles make up only one-fifth of the matter density of the universe, while the remainder is likely some unknown elementary particle. Supersymmetric theories of particle physics fix a host of problems in the SM, while receiving some experimental support, and predicting a candidate particle for cold dark matter (CDM) in the universe. The CDM particle- the lightest neutralino-can be searched for directly via nuclear scattering of Big Bang relics in underground experiments, via indirect searches for gamma rays or antimatter which results from dark matter annihlations in the galactic halo, or via direct dark matter particle production at accelerators such as the CERN LHC, which will turn on next year. I summarize in this colloquium the theoretical background and experimental search possibilities with regards to supersymmetric dark matter.