Trachelium may refer to:
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Trachelium (architecture), a part of a Doric or Ionic column
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''Trachelium'' (insect), a genus of insects in the broad-headed bug family,
Alydidae
Alydidae, commonly known as broad-headed bugs, is a family of true bugs very similar to the closely related Coreidae (leaf-footed bugs and relatives). There are at least 60 genera and 300 species altogether. Distributed in the temperate and war ...
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''Trachelium'' (plant), a genus of plants in the bellflower family,
Campanulaceae
The family Campanulaceae (also bellflower family), of the order Asterales, contains nearly 2400 species in 84 genera of herbaceous plants, shrubs, and rarely small trees, often with milky sap. Among them are several familiar garden plants belo ...
{{disambiguation, genus