Gymnosoma par 
Gymnosoma rotundatum 
Gynoplistia bella 
Hackberry Aciculate Gall Midge 
Hackberry Thorn Gall Midge 
Hairless Bee Fly 
Hairy Beech Gall 
Hairy Maggot Blow Fly 
Hairy-eyed Flower Fly 
Hanging Fly 
Hawthorn Fly 
Hedriodiscus vertebratus 
Heineken Fly 
Helina evecta 
Helina impuncta 
Helophilus hybridus 
Hemipenthes eumenes 
Hercules Robberfly 
Herina frondescentiae 
Heteralonia dispar 
Heteropsilopus ingenuus 
Heteropsilopus squamifer 
Hexatoma constricta 
Hickory Beret Gall Midge