Study of Radiative and Electroweak Penguin Decays at Belle

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.