The recent studies on radiative and electroweak penguin decays by the Belle experiment are reported.
These new measurements are based on the Belle full data set of 772 $\times 10^6 B\bar{B}$.
All the measurements of $B\to K^{*}\gamma$ are most precise to date and
the first evidence of isospin violation in $b\to s\gamma$ decay with a significance of 3.1 $\sigma$.

Lepton flavor dependent angular analysis of $B\to K^{*}\ell^+\ell^-$ decays, where $\ell$ is either $e$ or $\mu$,
and results of search for lepton flavor violating process of $B^0 \to K^{*0}\mu e$ and the rare decays of $B\to h^{(*)}\nu\bar{\nu}$,
are presented.