| U Thein Oo (looks like u thein sein) | |
| Native Name: | Burmese: သိန်းဦး |
| Nationality: | Burmese |
| Occupation: | ကျောင်းဆရာ (Teacher) ဆရာကျောင်း |
Thein Oo (u thein sein ?) (my|သိန်းဦး; born 12 May 1948) is a businessman in Myanmar's computer industry, President of the Myanmar Computer Federation (a semi-governmental Nonprofit organization)[1] and also the president of ACE Data Systems, (ACE Group of companies.)[2]