| Language(s) | Chinese, Vietnamese, Meitei, Punjabi, others |
|---|---|
| Origin | |
| Meaning | Chinese (雷): "thunder" |
| Other names | |
| Variant form(s) | Punjabi (Loi) |
Loi is a surname. It has various origins, including as a spelling in Punjabi as Loi, three Chinese surnames (雷, 呂, 黎), a traditional surname from Sardinia, and a surname in India among Jatt Sikhs. Loi is a common Jatt surname found among Sikhs in Punjab. The surname only belongs to the Jatt caste within Punjab and the Sikh community.