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The field of the globular cluster NGC 3201 was monitored between 1998 and2009 in a search for variable stars. $BV$ light curves were obtained for 152periodic or likely periodic variables, 57 of which are new detections.Thirty-seven newly detected variables are proper motion members of the cluster.Among them we found seven detached or semi-detached eclipsing binaries, fourcontact binaries, and eight SX Phe pulsators. Four of the eclipsing binariesare located in the turnoff region, one on the lower main sequence and theremaining two slightly above the subgiant branch. Two contact systems are bluestragglers, and another two reside in the turnoff region. In the blue stragglerregion a total of 266 objects were found, of which 140 are proper motion (PM)members of NGC 3201, and another 19 are field stars. Seventy-eight of theremaining objects for which we do not have PM data are located within thehalf-light radius from the center of the cluster, and most of them are likelygenuine blue stragglers. Four variable objects in our field of view were foundto coincide with X-ray sources: three chromosperically active stars and aquasar at a redshift $z\approx0.5$.

The Clusters AgeS Experiment (CASE). Variable stars in the field of the globular cluster NGC 3201