Principal pollinators of commercial legume forage crops (principally alfalfa and soybeans, plus minor crops of sainfoin, trefoil, and clovers) in south eastern Kazakhstan include 82 species of insects in 14 families and 3 orders. Hymenoptera species were the most frequently recorded. Lepidoptera and Diptera were less frequently encountered and carried little evident pollen, suggesting they were relatively unimportant as pollinators. Field data for Hymenoptera, supplemented with data from traps and artificial nesting sites, showed that 8 species of pollen carrying solitary bees (Anthidium cingulatum, Hoplitis parvula, Megachile rotundata, Metallinella leucogastra, Osmia coerulescens, O. parvula, O. rufa, and Ceratina cyanea) were the most frequent visitors, and thus the most important pollinators, of forage legumes in southeastern Kazakhstan. Zoogeographically, the identified pollinators were dominated by Holarctic, Trans- Palearctic, Western Palearctic, and Central Asian species.