Sulim Bekmirzayevich Yamadayev (; 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. As such, until 2008, he was officially in command of the biggest pro-Moscow militia outside the control of the current Chechen president Ramzan Kadyrov. From August 1 to 22 August 2008 Yamadayev was wanted in Russia on a federal warrant. Nevertheless, he served as one of the Russian military commanders in Russia's war with Georgia during the same period.