  We present the results of the optical identification and spectroscopic
redshift measurements of 216 galaxy clusters detected in the SRG/eROSITA
all-sky X-ray survey. The spectroscopic observations were performed in
2020-2023 with the 6-m BTA telescope at the Special Astrophysical Observatory
of the Russian Academy of Sciences, the 2.5-m telescope at the Caucasus
Mountain Observatory of the Sternberg Astronomical Institute of the Moscow
State University, the 1.6-m AZT-33IK telescope at the Sayan Solar Observatory
of the Institute of Solar-Terrestrial Physics of the Siberian Branch of the
Russian Academy of Sciences, and the 1.5-m Russian-Turkish telescope (RTT-150)
at the T\"{U}B\.{I}TAK Observatory. For all of the galaxy clusters presented
here the spectroscopic redshift measurements have been obtained for the first
time. Of these, 139 galaxy clusters have been detected for the first time in
the SRG/eROSITA survey and 22 galaxy clusters are at redshifts $z_{spec}
\gtrsim 0.7$, including three at $z_{spec} \gtrsim 1$. Deep direct images with
the rizJK filters have also been obtained for four distant galaxy clusters at
$z_{spec} > 0.7$. For these observations the most massive clusters are
selected. Therefore, most of the galaxy clusters presented here most likely
will be included in the cosmological samples of galaxy clusters from the
SRG/eROSITA survey.
