Biological data (in particular, on reproduction), main hosts, synonymy and distribution are reviewed for 14 species of the genus Trichogramma recorded in Ukraine. The species included inhabit natural and disturbed habitats, and are mass-reared by commercial enterprises. Trichogramma achaeae Nagarkatti & Nagaraja is reported for Ukraine for the first time: although for mass-rearing conditions only, in Dnipropetrovsk and Poltava Regions. It is likely it was introduced in 2019–2020.