Hepatitis E virus (HEV) was studied in different types of wild boar captive settings in Thailand, including a wildlife breeding research station, zoo, and commercial wild boar farm, which were located in different locations of Thailand. Fifty-one fecal samples were collected and screened for HEV RNA and then analyzed. One sample obtained from a wildlife breeding research station in Ratchaburi province was HEV positive. Phylogenetic characterization revealed that the virus was HEV genotype 3 and belongs to subgroup 3e, which is closely related to HEV recently isolated from domestic pigs and humans in the country. It was hypothesized that HEV is shared among wild boars, domestic pigs, and humans in Thailand.