| Daniel William Coquillett | |
| Birth Date: | 23 January 1856 |
| Birth Place: | Pleasant Valley, Ill |
| Death Place: | Atlantic City, New Jersey |
| Nationality: | American |
| Fields: | Entomology |
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| Known For: | Wrote a revision of the dipterous family Therevidae |
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Daniel William Coquillett (23 January 1856, Pleasant Valley, Ill. – 7 July 1911 Atlantic City, New Jersey) was an American entomologist who specialised in Diptera.[1] He wrote a revision of the dipterous family Therevidae[2] and many other scientific papers in which he described many new species and genera of Diptera. Coquillett was also the first to attempt fumigation with hydrocyanic acid as a means for controlling citrus scale insects. He experimented in the Wolfskill orange groves where he was supported by the foreman and later quarantine entomologist Alexander Craw in 1888–89.[3]