Halotus (c. 20–30 AD – c. 70–80 AD) was an eunuch servant to the Roman Emperor Claudius, the fourth member of the Julio-Claudian dynasty. He served Claudius as a taster and as a chief steward; it was because of his occupation, which entailed close contact with Claudius, that he is and was a suspect in the murder of the latter by poison. Along with Agrippina the Younger, the wife of Claudius, Halotus was considered one of the most likely to have committed the murder, although speculation by ancient historians suggest that he may have been working under orders of Agrippina.