Daniel William Coquillett (23 January 1856 – 7 July 1911) was an American entomologist who specialised in flies.

[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 flies.

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.

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