Soi (surname) Soi is a surname. Notable people with the surname include: Brian Soi (born 1985), American football defensive tackle Edwin Soi (born 1986), Kenyan runner Surname listThis page lists people with the surname Soi. If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.