  We present results of a photometric survey for variable stars in the field of
the globular cluster Omega Centauri. The observed region was centered roughly
on the cluster core and covered 644 arcmin^2. The cluster was monitored on 59
nights in 1999 and 2000. A total of 117 new variables were identified. Among
them there are 16 RR Lyr-type stars, 35 SX Phe variables and 26 eclipsing
binaries. A comprehensive catalog including all variable stars so far reported
from the cluster field is presented. We list basic photometric properties and
provide finding charts for a total of 392 objects. For 313 of them new BV light
curves were obtained. The presented sample includes several interesting
variables, such as SX Phe stars with extremely short periods of pulsation and
several candidates for pulsating K giants. Optical counterparts to 9 X-ray
sources detected by XMM and Chandra telescopes were identified: all of them are
likely to be foreground variables not related to the cluster.
