Roman Republic , era in Ancient Rome, between the Kingdom (ending 510 BC) and the Empire (starting 44 BC or 27 BC, depending on interpretation)
Weimar Republic , historical name for the republic that governed Germany from 1919 to 1933
Some countries, like France and Spain had several such epochs: in these countries, when referring to one of these periods, ''Republic'' is qualified by a number, see:
LTD [http://www.jointherepublic.com], Based in Leeds, England, Republic is a fashion store for young males and females in the UK. They have over 100 stores and are fastly becoming a major name on the high street.