Fruit flies (Diptera: Tephritidae) diversity in horticultural farm of Merawang Sub-District, Bangka District, Bangka Belitung Islands. Fruit flies (Diptera: Tephritidae) are main pests in fruit and vegetable cultivation. There are 4000 species of fruit flies in the world and 35% of them are important pests, including commercial fruits that have high economic value. Merawang District is one of the centers of horticultural production, especially fruits and vegetables. One of the threats to the production of horticultural commodities is the attack of fruit flies. The purpose of this study was to determine the diversity, distribution, and types of fruit flies in horticultural crops in Merawang Sub-District, Bangka District. The research was conducted in descriptive method, in this case, the survey method was also used. The sampling was done in purposive sampling method. In total, 1248 specimen of fruit flies were collected by using different attractant traps and identified. The methyl eugenol (ME) and cue lure (CUE) attractants trapped 1076 and 172 specimens, respectively. The diversity of fruit flies in Merawang Sub-District was relatively low, in total 9 species fruit flies were observed and identified as Bactrocera dorsalis (Hendel), B. umbrosa (Fabricius), B. carambolae (Drew & Hancock), B. occipitalis (Bezzi), Zeugodacus cucurbitae (Coquillett), B. albistrigata (de Meijer), Z. caudata (Fabricius), B. limbifera (Bezzi), and Dacus nanggalae (Drew & Hancock). The species dominant observed at the study site were B. dorsalis (Hendel), B. carambolae (Drew & Hancock), and B. occipitalis (Bezzi). Air Anyir Village was the highest number of fruit flies species.