  We report the discovery of CXOU J191100-595621 and CXOU J191012-595619, two
galaxy clusters serendipitously detected in the direction of globular cluster
NGC 6752, based on archival {\it Chandra} observations with a total exposure
time of $\sim 344$ ks. The deep {\it Chandra} X-ray data enabled us to measure
properties of both systems, which result in a redshift of $z=0.239\pm0.013$ and
$z=0.375\pm0.016$, a temperature of $kT=3.32^{+0.57}_{-0.46}$ keV and
$kT=3.71^{+1.18}_{-0.86}$ keV, an iron abundance of $Z_{\rm
Fe}=0.64^{+0.34}_{-0.29}Z_{\rm Fe\odot}$ and $Z_{\rm
Fe}=1.29^{+0.97}_{-0.65}Z_{\rm Fe\odot}$, and a rest-frame full band (0.5-7
keV) luminosity of $L_{\rm X}=9.2^{+1.2}_{-1.1}\times 10^{43} {\rm \, erg\,
s^{-1}}$ and $L_{\rm X}=9.9^{+2.7}_{-2.2}\times 10^{43} {\rm \, erg\, s^{-1}}$
for CXOU J191100-595621 and CXOU J191012-595619, respectively. The temperature
profile of CXOU J191100-595621 is found to decreases with decreasing radius,
indicating a cool core in this cluster. The hydrostatic equilibrium estimation
suggests the clusters are moderately weighted, with $M_{500}=(1.3\pm0.4)\times
10^{14}\, M_{\odot}$ and $M_{500}=(2.0\pm1.5)\times 10^{14}\, M_{\odot}$,
respectively. We search for optical and radio counterparts of X-ray point
sources in the clusters. Three active galactic nuclei are found, among which
one is identified with a narrow-angle-tail radio galaxy, and one is found to
associated with the brightest central galaxy (BCG) of CXOU J191100-595621.
