|Look up soi or söi in Wiktionary, the free dictionary.|
A soi is a side-street branching off a major street in Thailand.
Soi may also refer to:
- Soi (surname), a surname
- Soi language, an Iranian language
- Chua Soi Lek (born 1947), Malaysian politician
- Silicon on insulator, method of IC manufacturing
- Second-order intercept point, a measure of linearity that quantifies second-order distortion generated by nonlinear systems and devices