Threadworm may refer to:
- Pinworm (parasite)
- Strongyloides stercoralis
- In non-human contexts, nematodes more broadly, from Ancient Greek νῆμα (nêma, nêmatos, 'thread') and -eiδἠς (-eidēs, 'species').
This disambiguation page lists articles associated with the title Threadworm.
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