Denis Valentinovich Berezovsky (Ukrainian: ????? ???????????? ????????????, Russian: ????´? ???????´????? ??????´?????; born 15 July 1974) is a rear admiral and the Russian Black Sea Fleet deputy commander.
He is also a former commander of the Ukrainian Navy.
He was appointed commander-in-chief of the Ukrainian Navy by Interim President Oleksandr Turchynov on March 1, 2014, serving for just one day before defecting to the self-declared pro-Russian separatist Crimean government during the 2014 Crimean crisis.
On March 24, 2014, the Defense Minister of Russia Sergei Shoigu appointed Berezovsky as the Russian Black Sea Fleet deputy commander.
On March 5, 2014, the Office of the General Prosecutor of Ukraine issued an order to detain Berezovsky on suspicion of treason.