| Family | Apioceridae Bigot, 1852 Flower-loving flies | 10 168 | Genera Species |
| Family | Apsilocephalidae Nagatomi & al., 1991
| 9 13 | Genera Species |
| Family | Apystomyiidae ♰ Nagatomi & Liu, 1994
| 0 0 | Genera Species |
| Family | Asilidae Latreille, 1802 Assassin flies, Robber flies, Robber Fly, Robberflies | 925 13249 | Genera Species |
| Family | Bombyliidae Latreille, 1802 Bee Flies, Bee Fly, Bee-flies | 474 9180 | Genera Species |
| Family | Evocoidae Yeates, Irwin & Wiegmann, 2006
| 2 2 | Genera Species |
| Family | Exeretonevridae Daniels, 1989
| 0 0 | Genera Species |
| Family | Hilarimorphidae Hendel, 1936 Hilarimorphid flies | 4 41 | Genera Species |
| Family | Mydidae Bezzi, 1903 Mydas flies, Mydas fly | 79 781 | Genera Species |
| Family | Mythicomyiidae Melander, 1902 Micro Bee Flies, Microbombyliids | 33 120 | Genera Species |
| Family | Protapioceridae ♰ Ren, 1998
| 2 4 | Genera Species |
| Family | Scenopinidae Burmeister, 1835 Window Flies, Window fly | 39 628 | Genera Species |
| Family | Therevidae Newman, 1834 Stiletto flies, Stiletto Fly, Stiletto-Flies, Therevids | 197 2122 | Genera Species |