Sulim Bekmirzayevich Yamadayev (Russian: Сули́м Бекмирза́евич Ямада́ев; 21 June 1973 – 30 March 2009) was a Chechen rebel commander from the First Chechen War who had switched sides together with his brothers Dzhabrail, Badrudi, Isa and Ruslan in 1999 during the outbreak of the Second Chechen War. He was de facto commander of the Russian military Special Battalion Vostok unit belonging to the GRU.